1739:
35:
472:
since 1892. It was revealed to have emission lines in its spectrum in a 1954 paper and was found to be a long period variable a year later. In 1966, R Octantis was officially classified as a
1771:
1046:
674:
757:
Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1".
68:
1781:
1022:
1237:
373:
1776:
61:
819:
Gontcharov, G. A. (November 2006). "Pulkovo
Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system".
1168:
Jura, M.; Yamamoto, A.; Kleinmann, S. G. (August 1993). "Long-period oxygen-rich optical Miras in the solar neighborhood".
1791:
969:
McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental
Parameters and Infrared Excesses of Hipparcos Stars".
1262:
1786:
1094:
Bidelman, William P. (November 1954). "Catalogue and
Bibliography of Emission-Line Stars of Types Later than B.".
1434:
424:
361:
641:
1761:
1257:
496:
1575:
1246:
484:
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241:
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431:
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40:
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1008:
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635:
492:
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190:
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142:
76:
495:
in its spectrum. However, this can range from M5.3 to M8.4e. It is currently on the
1655:
1419:
1414:
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1399:
1389:
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1379:
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302:
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20:
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43:
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34:
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57:
551:
1679:
1041:
645:
530:
508:
504:
477:
427:
398:
342:
295:
253:
81:
442:. The object is located relatively far at a distance of about 1,900
1189:
1115:
915:
833:
726:
701:
608:
983:
1272:
435:
217:
205:
1219:
893:
Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022).
1067:
Fleming, M. (November 1892). "Stars having peculiar spectra".
702:"A Catalogue of Spectra of Mira Variables of Types ME and Se"
592:
Data
Release 3. Summary of the content and survey properties"
476:. Later observations reveal it to have an overabundance of
586:
Vallenari, A.; et al. (Gaia collaboration) (2023).
511:
core. As a result, it has expanded to 466 times the
1715:
1687:
1678:
1641:
1602:
1574:
1471:
1433:
1280:
1271:
1149:. American Association of Variable Star Observers.
971:Monthly Notices of the Royal Astronomical Society
814:
812:
675:American Association of Variable Star Observers
434:that varies in-between 6.4 and 13.2 within 405
888:
886:
884:
1231:
1047:Centre de données astronomiques de Strasbourg
468:R Octantis has been known to have a peculiar
438:. At is maximum, it is barely visible to the
107:−86° 23′ 17.7741″
8:
695:
693:
691:
534:, which is cooler than most Mira variables.
1096:The Astrophysical Journal Supplement Series
706:The Astrophysical Journal Supplement Series
515:. R Octantis radiates over 9,000 times the
1684:
1638:
1277:
1238:
1224:
1216:
964:
962:
960:
982:
932:
914:
832:
725:
625:
607:
16:Variable star in the constellation Octans
895:"Stellar and substellar companions from
660:
658:
656:
654:
1772:Objects with variable star designations
543:
197:
1014:
454:, but is receding with a heliocentric
25:
581:
579:
577:
575:
573:
7:
136:M5.5e (M5.3e – M8.4e)
60:
209:
1021:: CS1 maint: unflagged free DOI (
665:Otero, Sebastian (26 April 2011).
487:of M5.5e, indicating that it is a
14:
1738:
1737:
1147:Studies of Long Period Variables
1001:10.1111/j.1365-2966.2012.21873.x
33:
700:Keenan, Philip C. (June 1966).
642:Gaia DR3 record for this source
232:1.7152 ± 0.0862
1782:Henry Draper Catalogue objects
499:, generating energy by fusing
46:of R Octantis, from AAVSO data
1:
903:Astronomy & Astrophysics
1263:Octans in Chinese astronomy
1069:Astronomy and Astro-Physics
934:10.1051/0004-6361/202142146
627:10.1051/0004-6361/202243940
1808:
596:Astronomy and Astrophysics
483:The object has an average
419:, is a solitary, red hued
120:6.4 – 13.2
18:
1735:
1637:
1253:
1170:The Astrophysical Journal
851:10.1134/S1063773706110065
779:10.1134/S1063772917010085
425:circumpolar constellation
391:
359:
352:
348:
269:
264:
260:
160:
153:
124:
51:
31:
423:located in the southern
19:Not to be confused with
1258:List of stars in Octans
1247:Constellation of Octans
1145:Campbell, Leon (1955).
925:2022A&A...657A...7K
618:2023A&A...674A...1G
507:shells around an inert
497:asymptotic giant branch
114:Apparent magnitude
1777:Durchmusterung objects
485:stellar classification
480:on its outer layers.
1395:σ (Polaris Australis)
525:effective temperature
517:luminosity of the Sun
1792:Emission-line stars
1182:1993ApJ...413..298J
1155:1955slpv.book.....C
1108:1954ApJS....1..175B
1081:1892AstAp..11..765F
993:2012MNRAS.427..343M
843:2006AstL...32..759G
771:2017ARep...61...80S
718:1966ApJS...13..333K
392:Database references
28:
450:measurements from
432:apparent magnitude
354:Other designations
212: 31.079
143:Variable type
131:Spectral type
26:
1787:Hipparcos objects
1749:
1748:
1731:
1730:
1674:
1673:
1633:
1632:
821:Astronomy Letters
759:Astronomy Reports
513:radius of the Sun
410:
409:
247:1,900 ± 100
200: 0.540
1799:
1741:
1740:
1685:
1651:2MASS J2126–8140
1639:
1278:
1240:
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1226:
1217:
1210:
1209:
1165:
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748:
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729:
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662:
649:
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611:
583:
568:
567:
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563:
548:
533:
464:
415:, also known as
377:
370:
211:
199:
183:
181:
137:
125:Characteristics
117:
97:
92:
52:Observation data
37:
29:
1807:
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1049:
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1034:
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1013:
968:
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827:(11): 759–771.
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756:
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699:
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679:
677:
664:
663:
652:
585:
584:
571:
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559:
552:"Download Data"
550:
549:
545:
540:
528:
459:
456:radial velocity
387:
372:
365:
328:
325:
308:
305:
288:
285:
252:(580 ± 30
251:
208:
179:
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172:
167:Radial velocity
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95:
90:Right ascension
88:
53:
47:
38:
24:
17:
12:
11:
5:
1805:
1803:
1795:
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1789:
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1779:
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1762:Mira variables
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1228:
1220:
1212:
1211:
1190:10.1086/172997
1160:
1137:
1116:10.1086/190007
1086:
1059:
1028:
956:
880:
808:
749:
727:10.1086/190139
687:
650:
569:
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541:
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493:emission lines
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96:05 26 06.19562
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1032:
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1024:
1018:
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1006:
1002:
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994:
990:
985:
980:
977:(1): 343–57.
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972:
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957:
952:
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944:
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930:
926:
922:
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719:
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672:
671:AAVSO Website
668:
661:
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518:
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510:
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502:
498:
494:
490:
486:
481:
479:
475:
474:Mira variable
471:
466:
463:
457:
453:
449:
445:
441:
437:
433:
429:
426:
422:
421:variable star
418:
414:
406:
403:
401:
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396:
395:
390:
385:
382: 40857,
381:
375:
368:
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203:
196:
194:
192:
191:Proper motion
188:
187:
176:
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156:
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110:
106:
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100:
94:
91:
87:
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83:
80:
78:
77:Constellation
75:
74:
70:
66:
63:
59:
56:
50:
45:
42:
36:
30:
22:
1656:HD 142022 Ab
1442:
1173:
1169:
1163:
1146:
1140:
1099:
1095:
1089:
1072:
1068:
1062:
1050:. Retrieved
1040:
1031:
1017:cite journal
974:
970:
906:
902:
896:
824:
820:
765:(1): 80–88.
762:
758:
752:
709:
705:
678:. Retrieved
670:
667:"R Octantis"
599:
595:
589:
560:. Retrieved
555:
546:
482:
467:
430:. It has an
416:
412:
411:
397:
386: 25412
334:
314:
294:
274:
240:
224:
189:
165:
21:Rho Octantis
1661:HD 212301 b
1075:: 765–767.
529:2,571
521:photosphere
489:M-type star
444:light years
341:2,571
336:Temperature
321:9,304
103:Declination
44:light curve
41:visual band
27:R Octantis
1756:Categories
1643:Exoplanets
1610:Gliese 877
1037:"V* R Oct"
916:2109.10912
834:1606.08053
609:2208.00211
538:References
413:R Octantis
362:R Octantis
316:Luminosity
184: km/s
155:Astrometry
1723:PGC 10922
1666:LHS 475 b
1206:0004-637X
1198:1538-4357
1132:0067-0049
1124:1538-4365
1009:118665352
984:1208.2037
951:0004-6361
943:1432-0746
875:119231169
867:1063-7737
859:1562-6873
803:125853869
795:1063-7729
787:1562-6881
744:0067-0049
736:1538-4365
636:244398875
562:1 October
556:aavso.org
519:from its
446:based on
440:naked eye
301:466
281:6.6
116: (V)
1743:Category
1680:Galaxies
1620:TOI-4342
1435:Variable
1052:21 April
680:21 April
501:hydrogen
460:46
452:Gaia DR3
448:parallax
417:HD 40857
327:☉
307:☉
287:☉
242:Distance
226:Parallax
1625:W2150AB
1615:LHS 475
1178:Bibcode
1176:: 298.
1151:Bibcode
1104:Bibcode
1102:: 175.
1077:Bibcode
989:Bibcode
921:Bibcode
839:Bibcode
767:Bibcode
714:Bibcode
712:: 333.
614:Bibcode
558:. AAVSO
470:spectra
265:Details
65:J2000.0
62:Equinox
58:J2000.0
1767:Octans
1594:212301
1589:166066
1584:142022
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523:at an
509:carbon
505:helium
478:oxygen
428:Octans
399:SIMBAD
376:−86°72
369:−86°52
296:Radius
82:Octans
1716:Other
1603:Other
1282:Bayer
1273:Stars
1194:eISSN
1120:eISSN
1005:S2CID
979:arXiv
939:eISSN
911:arXiv
899:EDR3"
871:S2CID
855:eISSN
829:arXiv
799:S2CID
783:eISSN
732:eISSN
640:
632:S2CID
604:arXiv
491:with
210:Dec.:
55:Epoch
1707:7098
1702:7095
1697:2573
1566:8995
1561:8957
1556:8935
1551:8786
1546:8577
1541:8526
1536:8432
1531:8380
1526:8234
1521:7812
1516:7785
1511:7698
1506:6912
1501:6837
1496:4595
1202:ISSN
1128:ISSN
1054:2016
1023:link
947:ISSN
897:Gaia
863:ISSN
791:ISSN
740:ISSN
682:2016
590:Gaia
564:2021
503:and
462:km/s
436:days
405:data
276:Mass
148:Mira
69:ICRS
39:The
1689:NGC
1491:525
1486:512
1186:doi
1174:413
1112:doi
997:doi
975:427
929:doi
907:657
847:doi
775:doi
722:doi
644:at
622:doi
600:674
527:of
458:of
384:HIP
374:CPD
234:mas
228:(π)
214:mas
202:mas
198:RA:
193:(μ)
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1420:ψ
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1380:π
1375:ο
1370:ξ
1365:ν
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1350:λ
1345:κ
1340:ι
1335:θ
1330:η
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