322:
235:, where two independent lines of evidence constrained the mass and radius to be Neptune-like. The mass-signature has been independently recovered by two other teams. However, the radius-signature was independently recovered by one of the teams but not the other. The original discovery team later showed that this latter study appears affected by systematic error sources that may influence their findings.
382:
radial velocity measurements. A second independent reanalysis was published in April 2019, which recovered one of the two lines of evidence, the transit timing variation, but the not the second, the moon-like dip. The original discovery team responded to this soon after, finding that this re-analysis
366:
signature that indicated an approximately
Neptune-mass moon, and an additional photometric dip that indicated a Neptune-radius moon. The relative phasing of the two signatures was also consistent with that which a real moon would cause, with the effects in anti-phase. The study concluded that the
378:
signal. However, the authors suggested that the data could also be explained by an inclined hot-Jupiter in the same system that has gone previously undetected, which could be tested using future
990:
371:
hypothesis is the simplest and best explanation for the available observations, though warned that it is difficult to assign a precise probability to its reality and urged follow-up analyses.
255:, a type of planet several times greater in radius than Earth and mostly composed of hydrogen and helium. It is 11.4 times Earth's radius, approximately equal to that of the planet
1714:
405:
Timmermann, Anina; Heller, Rene; Reiner, Ansgar; Zechmeister, Mathias (2020). "Radial velocity constraints on the long-period transiting planet Kepler-1625 b with CARMENES".
3079:
3036:
2719:
283:
Unlike the gas giants in our Solar System, Kepler-1625b orbits much closer, slightly closer than the orbital radius as the Earth around the Sun. The planet takes 287
991:"Weird giant may be the first known alien moon - Evidence is mounting that a world the size of Neptune could be orbiting a giant planet far, far away"
1072:
632:
3074:
1000:
57:
275:. However, this mass value only corresponds to an 3-sigma upper limit and the mass of the planet remains undetected at this time.
3084:
321:
1065:
1022:
374:
In
February 2019, a reanalysis of the combined Kepler and Hubble observations recovered both a moon-like dip and similar
606:
1686:
1027:
3089:
1058:
930:
Zsom, Andras; Seager, Sara; et al. (2013). "Towards the
Minimum Inner Edge Distance of the Habitable Zone".
795:
459:
51:
732:"No Evidence for Lunar Transit in New Analysis of Hubble Space Telescope Observations of the Kepler-1625 System"
77:
303:. Kepler-1625b receives 2.6 times more insolation than the Earth, meaning it lies at the inner edge of the
383:
exhibits stronger systematics in their reduction which may be responsible for their differing conclusion.
995:
808:
464:
1447:
30:
2002:
670:
375:
363:
2696:
2406:
1092:
142:
1643:
1081:
348:
232:
224:
212:
2647:
2591:
1610:
1279:
307:. However, as the planet has likely no solid surface, bodies of liquid water are impossible.
831:
487:
428:
2478:
949:
894:
827:
753:
689:
562:
483:
424:
379:
91:
8:
2296:
116:
35:
953:
898:
757:
693:
566:
2581:
965:
939:
912:
884:
843:
817:
771:
743:
707:
679:
583:
552:
540:
499:
473:
440:
414:
961:
2609:
1111:
916:
847:
775:
711:
588:
503:
444:
84:
969:
2531:
2526:
2508:
2266:
1600:
957:
902:
835:
761:
697:
614:
578:
570:
491:
432:
264:
69:
839:
495:
436:
2599:
2396:
2246:
2196:
2176:
2171:
2166:
2052:
2131:
3049:
3044:
2483:
1595:
1032:
907:
872:
796:"An alternative interpretation of the exomoon candidate signal in the combined
766:
731:
702:
661:
359:
341:
316:
304:
268:
231:. Further evidence for a Neptunian moon was found the following year using the
228:
102:
61:
3068:
2536:
2146:
2141:
1234:
1139:
208:
2962:
2957:
2952:
2947:
2942:
2932:
2927:
2324:
2285:
2256:
2211:
2206:
2186:
2161:
1259:
1254:
1174:
592:
574:
260:
167:
149:
1050:
219:, and orbits its star every 287.4 days. In 2017, hints of a Neptune-sized
2998:
2993:
2988:
2983:
2978:
2922:
2917:
2912:
2907:
2902:
2897:
2892:
2887:
2882:
2877:
2872:
2867:
2622:
2617:
2488:
2465:
2445:
2440:
2432:
2332:
2251:
2201:
2136:
2042:
2037:
2032:
2027:
2022:
1590:
1585:
1580:
1575:
1565:
1560:
1550:
1545:
1224:
1169:
1164:
1159:
1154:
1134:
1129:
986:
352:
296:
272:
249:
196:
129:
2862:
2857:
2852:
2847:
2842:
2832:
2827:
2822:
2817:
2812:
2807:
2802:
2797:
2792:
2787:
2782:
2777:
2772:
2767:
2762:
2757:
2752:
2686:
2521:
2352:
2347:
2314:
2309:
2304:
2156:
2151:
2017:
2012:
2007:
1997:
1992:
1987:
1982:
1977:
1972:
1967:
1962:
1957:
1952:
1947:
1942:
1699:
1694:
1540:
1535:
1530:
1525:
1144:
355:
which revealed two independent lines of evidence indicative of a large
204:
871:
Teachey, Alex; Kipping, David M.; Burke, Christopher (March 5, 2020).
340:(a moon in another solar system) orbiting Kepler-1625b using archival
263:), based on radial velocity observations. This puts it just below the
2747:
2742:
2737:
2732:
2710:
2271:
2241:
2126:
1937:
1932:
1922:
1917:
1912:
1907:
1902:
1897:
1892:
1887:
1877:
1872:
1867:
1862:
1857:
1852:
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1842:
1837:
1832:
1827:
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1817:
1812:
1807:
1802:
1797:
1792:
1787:
1782:
1777:
1772:
1767:
1762:
1757:
1752:
1747:
1742:
1676:
1671:
1666:
1661:
1656:
1651:
1633:
1628:
1623:
1618:
1570:
1249:
1244:
1239:
1229:
1219:
1214:
1209:
1149:
252:
188:
3008:
2727:
2691:
2665:
2660:
2655:
2576:
2571:
2566:
2561:
2556:
2551:
2546:
2516:
2473:
2382:
2377:
2372:
2367:
2362:
2357:
2181:
1737:
1732:
1727:
1520:
1515:
1510:
1505:
1500:
1495:
1490:
1485:
1480:
1437:
1432:
1427:
1422:
1417:
1412:
1407:
1402:
1397:
1392:
1387:
1382:
1377:
1372:
1367:
1362:
1357:
1352:
1347:
1342:
1337:
1332:
1327:
1322:
1317:
1312:
1307:
1204:
1199:
1194:
1189:
1184:
1179:
889:
822:
748:
684:
557:
478:
419:
944:
730:
Kreidberg, Laura; Luger, Rodrigo; Bedell, Megan (April 24, 2019).
3027:
3013:
3003:
2498:
2493:
2450:
2342:
2261:
2236:
2231:
2191:
2085:
1722:
1704:
1555:
1475:
1470:
1465:
1460:
1455:
1302:
1297:
1292:
1287:
1269:
1264:
1124:
404:
368:
356:
337:
333:
325:
256:
220:
216:
794:
Heller, Rene; Rodenbeck, Kai; Giovanni, Bruno (April 17, 2019).
2681:
2638:
2423:
2226:
2221:
2110:
2105:
2100:
2095:
2090:
2080:
2075:
2070:
2065:
2060:
200:
2541:
2455:
2411:
2216:
1119:
633:"First exomoon might have been spotted 4000 light years away"
292:
288:
259:. However, it is up to 11.6 times more massive (about 3,700
2837:
2337:
1102:
929:
299:, as a result of the star's slightly greater mass than the
161:
215:. The large gas giant is approximately the same radius as
1927:
1882:
300:
284:
192:
109:
873:"Loose Ends for the Exomoon Candidate Host Kepler-1625b"
607:"Exoplanet Exploration: Planets Beyond our Solar System"
793:
611:
328:
Kepler-1625b I orbiting Kepler-1625b (artist concept).
659:
729:
541:"Evidence for a large exomoon orbiting Kepler-1625b"
3080:
Exoplanets discovered by the Kepler space telescope
870:
599:
458:Luri, X.; Brown, A.; Sarro, L. (August 10, 2018).
3066:
660:Teachey, Alex; et al. (December 22, 2017).
981:
979:
725:
723:
721:
662:"HEK. VI. On the Dearth of Galilean Analogs in
271:. Any more massive and Kepler-1625b would be a
626:
624:
539:Teachey, Alex; et al. (October 3, 2018).
538:
457:
1066:
655:
653:
534:
532:
530:
528:
526:
524:
522:
520:
1015:
976:
789:
787:
785:
718:
1080:
666:, and the Exomoon Candidate Kepler-1625b I"
621:
332:In July 2017, researchers found signs of a
1073:
1059:
650:
517:
943:
906:
888:
821:
782:
765:
747:
701:
683:
582:
556:
477:
418:
923:
320:
278:
351:published new observations of the star
347:In October 2018, researchers using the
223:in orbit of the planet was found using
3067:
866:
864:
451:
400:
398:
396:
3035:
1054:
985:
630:
310:
3075:Giant planets in the habitable zone
861:
393:
13:
243:
238:
14:
3101:
1028:Extrasolar Planets Encyclopaedia
1031:. 15 July 2019. Archived from
227:observations collected by the
16:Gas giant orbiting Kepler-1625
1:
3085:Exoplanets discovered in 2016
631:Crane, Leah (July 27, 2017).
386:
809:Astronomy & Astrophysics
465:Astronomy & Astrophysics
7:
996:National Geographic Society
962:10.1088/0004-637X/778/2/109
840:10.1051/0004-6361/201834913
496:10.1051/0004-6361/201832964
437:10.1051/0004-6361/201937325
10:
3106:
407:Astronomy and Astrophysics
314:
3026:
2971:
2718:
2709:
2674:
2646:
2637:
2608:
2590:
2507:
2464:
2431:
2422:
2395:
2323:
2295:
2284:
2119:
2051:
1713:
1685:
1642:
1609:
1446:
1278:
1110:
1101:
1088:
932:The Astrophysical Journal
736:The Astrophysical Journal
362:. These were a 20-minute
178:
160:
140:
135:
125:
115:
103:Orbital period (sidereal)
100:
90:
75:
68:
49:
41:
29:
24:
908:10.3847/1538-3881/ab7001
877:The Astronomical Journal
767:10.3847/2041-8213/ab20c8
703:10.3847/1538-3881/aa93f2
671:The Astronomical Journal
376:transit timing variation
364:Transit Timing Variation
136:Physical characteristics
36:Kepler Space Observatory
1093:List of stars in Cygnus
1082:Constellation of Cygnus
832:2019A&A...624A..95H
488:2018A&A...616A...9L
429:2020A&A...635A..59T
70:Orbital characteristics
3090:Cygnus (constellation)
2697:ZTF J203349.8+322901.1
575:10.1126/sciadv.aav1784
349:Hubble Space Telescope
329:
265:deuterium-fusing limit
233:Hubble Space Telescope
460:"Gaia Data Release 2"
324:
279:Orbit and temperature
267:, which is around 13
2479:North America Nebula
804:data of Kepler-1625"
380:Doppler spectroscopy
954:2013ApJ...778..109Z
899:2020AJ....159..142T
758:2019ApJ...877L..15K
694:2018AJ....155...36T
617:on October 3, 2018.
567:2018SciA....4.1784T
187:is a super-Jupiter
42:Discovery date
31:Discovery site
21:
2582:Soap Bubble Nebula
1003:on October 3, 2018
989:(3 October 2018).
330:
248:Kepler-1625b is a
19:
3062:
3061:
3058:
3057:
3022:
3021:
2705:
2704:
2633:
2632:
2626:
2415:
2391:
2390:
2280:
2279:
1035:on 5 October 2018
1023:"Kelpler-1625b-I"
311:Candidate exomoon
182:
181:
3097:
3033:
3032:
2716:
2715:
2644:
2643:
2620:
2429:
2428:
2409:
2293:
2292:
1108:
1107:
1075:
1068:
1061:
1052:
1051:
1045:
1044:
1042:
1040:
1019:
1013:
1012:
1010:
1008:
999:. Archived from
983:
974:
973:
947:
927:
921:
920:
910:
892:
868:
859:
858:
856:
854:
825:
791:
780:
779:
769:
751:
727:
716:
715:
705:
687:
657:
648:
647:
645:
643:
628:
619:
618:
613:. Archived from
603:
597:
596:
586:
560:
551:(10): eaav1784.
545:Science Advances
536:
515:
514:
512:
510:
481:
455:
449:
448:
422:
402:
52:Detection method
22:
18:
3105:
3104:
3100:
3099:
3098:
3096:
3095:
3094:
3065:
3064:
3063:
3054:
3018:
2967:
2701:
2670:
2629:
2604:
2600:Crescent Nebula
2586:
2532:IRAS 20324+4057
2527:IRAS 19475+3119
2503:
2460:
2418:
2398:
2387:
2319:
2287:
2276:
2267:WISE J2000+3629
2177:GSC 03949-00967
2115:
2047:
1709:
1681:
1638:
1605:
1442:
1274:
1097:
1084:
1079:
1049:
1048:
1038:
1036:
1021:
1020:
1016:
1006:
1004:
984:
977:
928:
924:
869:
862:
852:
850:
792:
783:
728:
719:
658:
651:
641:
639:
629:
622:
605:
604:
600:
537:
518:
508:
506:
456:
452:
403:
394:
389:
319:
313:
281:
246:
244:Mass and radius
241:
239:Characteristics
173:
170:
155:
152:
145:
105:
80:
78:Semi-major axis
54:
17:
12:
11:
5:
3103:
3093:
3092:
3087:
3082:
3077:
3060:
3059:
3056:
3055:
3053:
3052:
3047:
3041:
3039:
3030:
3024:
3023:
3020:
3019:
3017:
3016:
3011:
3006:
3001:
2996:
2991:
2986:
2981:
2975:
2973:
2969:
2968:
2966:
2965:
2960:
2955:
2950:
2945:
2940:
2935:
2930:
2925:
2920:
2915:
2910:
2905:
2900:
2895:
2890:
2885:
2880:
2875:
2870:
2865:
2860:
2855:
2850:
2845:
2840:
2835:
2830:
2825:
2820:
2815:
2810:
2805:
2800:
2795:
2790:
2785:
2780:
2775:
2770:
2765:
2760:
2755:
2750:
2745:
2740:
2735:
2730:
2724:
2722:
2713:
2707:
2706:
2703:
2702:
2700:
2699:
2694:
2689:
2684:
2678:
2676:
2672:
2671:
2669:
2668:
2663:
2658:
2652:
2650:
2641:
2635:
2634:
2631:
2630:
2628:
2627:
2614:
2612:
2606:
2605:
2603:
2602:
2596:
2594:
2588:
2587:
2585:
2584:
2579:
2574:
2569:
2564:
2559:
2554:
2549:
2544:
2539:
2534:
2529:
2524:
2519:
2513:
2511:
2505:
2504:
2502:
2501:
2496:
2491:
2486:
2484:Pelican Nebula
2481:
2476:
2470:
2468:
2462:
2461:
2459:
2458:
2453:
2448:
2443:
2437:
2435:
2426:
2420:
2419:
2417:
2416:
2403:
2401:
2393:
2392:
2389:
2388:
2386:
2385:
2380:
2375:
2370:
2365:
2360:
2355:
2350:
2345:
2340:
2335:
2329:
2327:
2321:
2320:
2318:
2317:
2312:
2307:
2301:
2299:
2290:
2282:
2281:
2278:
2277:
2275:
2274:
2269:
2264:
2259:
2254:
2249:
2247:PSR J2032+4127
2244:
2239:
2234:
2229:
2224:
2219:
2214:
2209:
2204:
2199:
2194:
2189:
2184:
2179:
2174:
2169:
2164:
2159:
2154:
2149:
2147:Cygnus OB2 #12
2144:
2142:Cygnus OB2 #8A
2139:
2134:
2129:
2123:
2121:
2117:
2116:
2114:
2113:
2108:
2103:
2098:
2093:
2088:
2083:
2078:
2073:
2068:
2063:
2057:
2055:
2049:
2048:
2046:
2045:
2040:
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2030:
2025:
2020:
2015:
2010:
2005:
2000:
1995:
1990:
1985:
1980:
1975:
1970:
1965:
1960:
1955:
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1935:
1930:
1925:
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1405:
1400:
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1365:
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1315:
1310:
1305:
1300:
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1284:
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1275:
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1272:
1267:
1262:
1257:
1252:
1247:
1242:
1237:
1232:
1227:
1222:
1217:
1212:
1210:π (Azelfafage)
1207:
1202:
1197:
1192:
1187:
1182:
1177:
1172:
1167:
1162:
1157:
1152:
1147:
1142:
1137:
1132:
1127:
1122:
1116:
1114:
1105:
1099:
1098:
1096:
1095:
1089:
1086:
1085:
1078:
1077:
1070:
1063:
1055:
1047:
1046:
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342:Kepler Mission
317:Kepler-1625b I
315:Main article:
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209:constellation
206:
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191:orbiting the
190:
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177:
174:
165:
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159:
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48:
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37:
34:
32:
28:
23:
2937:
2257:W75N(B)-VLA2
2212:KIC 11145123
2207:KIC 11026764
1037:. Retrieved
1033:the original
1026:
1017:
1005:. Retrieved
1001:the original
994:
987:Drake, Nadia
935:
931:
925:
880:
876:
851:. Retrieved
813:
807:
801:
797:
739:
735:
675:
669:
663:
640:. Retrieved
637:NewScientist
636:
615:the original
610:
601:
548:
544:
507:. Retrieved
469:
463:
453:
410:
406:
373:
346:
331:
282:
261:Earth masses
250:Jovian-sized
247:
199:about 2,500
185:Kepler-1625b
184:
183:
121:89.97 ± 0.02
92:Eccentricity
83:0.98 ± 0.14
45:May 10, 2016
20:Kepler-1625b
2999:HD 191806 b
2989:HD 187123 b
2984:HD 185269 b
2623:Veil Nebula
2621:(including
2618:Cygnus Loop
2489:Sadr Region
2446:Barnard 147
2441:Barnard 146
2410:(including
2333:Berkeley 86
2297:Association
2252:SPECULOOS-3
2202:KIC 9832227
2197:KIC 8462852
2162:G79.29+0.46
2132:BD+40° 4210
1140:ε (Aljanah)
1135:δ (Fawaris)
1125:β (Albireo)
1039:14 December
353:Kepler-1625
297:Kepler-1625
295:) to orbit
273:brown dwarf
225:photometric
205:light-years
197:Kepler-1625
195:-like star
148:11.4 ± 1.6
143:Mean radius
130:Kepler-1625
117:Inclination
108:287.378949
3069:Categories
2838:64b (PH1b)
2711:Exoplanets
2522:Egg Nebula
2353:Messier 39
2348:Messier 29
2315:Cygnus OB9
2310:Cygnus OB7
2305:Cygnus OB2
2157:Cygnus X-3
2152:Cygnus X-1
2137:BD+43 3654
938:(2): 109.
890:1904.11896
883:(4): 142.
823:1902.06018
749:1904.10618
742:(2): L15.
685:1707.08563
558:1810.02362
479:1804.09376
420:2001.10867
387:References
2979:b Cygni b
2687:4C +48.48
2509:Planetary
2397:Molecular
2272:Wolf 1069
2242:N6946-BH1
2127:AFGL 2591
1280:Flamsteed
1120:α (Deneb)
1007:4 October
945:1304.3714
917:135465103
848:119311103
776:129945202
712:118911978
678:(1). 36.
504:244895570
445:210942758
253:gas giant
189:exoplanet
25:Discovery
3028:Exomoons
3009:KELT-20b
2692:Cygnus A
2639:Galaxies
2577:NGC 7048
2572:NGC 7027
2567:NGC 7026
2562:NGC 7008
2557:NGC 6884
2552:NGC 6881
2547:NGC 6826
2517:Abell 78
2474:NGC 6914
2407:Cygnus X
2383:NGC 6910
2378:NGC 6871
2373:NGC 6866
2368:NGC 6834
2363:NGC 6819
2358:NGC 6811
2288:clusters
2182:HAT-P-17
2172:G 208-45
2167:G 208-44
1928:86 (PH2)
1883:64 (PH1)
1448:Variable
1130:γ (Sadr)
970:27805994
853:April 1,
642:April 1,
593:30306135
509:April 1,
166:≤11.60
3050:1708b I
3045:1625b I
3014:TrES-5b
3004:KELT-9b
2499:Sh2-106
2494:Sh2-101
2451:IC 5146
2424:Nebulae
2343:IC 5146
2262:WASP-48
2237:MWC 349
2232:KOI-256
2192:KELT-20
950:Bibcode
895:Bibcode
828:Bibcode
754:Bibcode
690:Bibcode
584:6170104
563:Bibcode
484:Bibcode
425:Bibcode
369:exomoon
357:exomoon
338:exomoon
336:-sized
334:Neptune
326:Exomoon
291:; 9.43
287:(0.786
257:Jupiter
221:exomoon
217:Jupiter
203:(8,200
201:parsecs
58:Transit
3037:Kepler
2720:Kepler
2682:3C 438
2399:clouds
2227:KOI-81
2222:KOI-74
2187:KELT-9
1715:Kepler
1687:Gliese
1677:197037
1672:191806
1667:188753
1662:187123
1657:185435
1652:185269
1423:71 (g)
1418:68 (A)
1413:63 (f)
1403:59 (f)
1353:29 (b)
1348:28 (b)
1343:27 (b)
1338:26 (e)
1323:20 (d)
1313:16 (c)
968:
915:
846:
802:Hubble
798:Kepler
774:
710:
664:Kepler
591:
581:
502:
472:: 19.
443:
413:: 59.
344:data.
293:months
213:Cygnus
2972:Other
2963:1708b
2953:1649b
2948:1658b
2943:1652b
2938:1625b
2933:1520b
2928:1229b
2675:Other
2542:M1-92
2456:L1014
2412:DR 21
2217:KOI-5
2120:Other
1601:V2513
1596:V2214
1591:V1974
1586:V1794
1581:V1668
1576:V1500
1571:V1489
1566:V1334
1561:V1191
1556:V1143
1551:V1057
1546:V1027
1112:Bayer
1103:Stars
966:S2CID
940:arXiv
913:S2CID
885:arXiv
844:S2CID
818:arXiv
816:. 8.
772:S2CID
744:arXiv
708:S2CID
680:arXiv
553:arXiv
500:S2CID
474:arXiv
441:S2CID
415:arXiv
289:years
2923:737b
2918:560b
2913:452b
2908:451b
2903:432b
2898:419b
2893:409b
2883:371b
2868:186b
2666:7013
2661:6946
2656:6801
2466:H II
2433:Dark
2338:DR 6
2325:Open
2286:Star
2086:138a
2043:1708
2038:1649
2033:1625
2028:1520
2023:1229
1705:1245
1634:8193
1629:7912
1624:7767
1619:7633
1541:V476
1536:V404
1531:V389
1526:V380
1041:2020
1009:2018
855:2022
800:and
644:2022
589:PMID
511:2022
285:days
162:Mass
126:Star
2863:87c
2858:78b
2853:70b
2848:69b
2843:68b
2833:61b
2828:56b
2823:47b
2818:41b
2813:40b
2808:39b
2803:36b
2798:34b
2793:33b
2788:32b
2783:28b
2778:23b
2773:22b
2768:17b
2763:16b
2758:15b
2753:11b
2648:NGC
2610:SNR
2111:150
2106:148
2101:147
2096:142
2091:140
2081:137
2076:136
2071:135
2066:134
2061:133
2018:737
2013:560
2008:452
2003:451
1998:445
1993:432
1988:419
1983:411
1978:385
1973:371
1968:289
1963:223
1958:186
1953:182
1948:167
1943:107
1700:806
1695:777
958:doi
936:778
903:doi
881:159
836:doi
814:624
762:doi
740:877
698:doi
676:155
579:PMC
571:doi
492:doi
470:616
433:doi
411:635
301:Sun
211:of
193:Sun
3071::
2748:6b
2743:5b
2738:3c
2733:3b
2728:2b
2592:WR
2053:WR
1938:89
1933:87
1923:84
1918:80
1913:78
1908:70
1903:69
1898:68
1893:67
1888:66
1878:63
1873:61
1868:56
1863:51
1858:47
1853:45
1848:44
1843:43
1838:42
1833:41
1828:40
1823:39
1818:36
1813:35
1808:34
1803:33
1798:32
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