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31 Crateris

star in the constellation Corvus
Place Rotating Ellipsoidal Variable Q3598850

Facts

20 properties

Identity

Instance of
rotating ellipsoidal variable, spectroscopic binary, near-infrared source, ultraviolet source, variable star[2][3][4][5]
More facts +19
Absolute magnitude
0.63[35]
Apparent magnitude
5.24 (5.08–5.82, n=6)[29][30][31][32][33][34]
Catalog code
2MASS J12005117-1939325, GSC 06097-01648, HD 104337, SAO 157042, HIP 58587, HR 4590, FK5 2961, GC 16423, GCRV 7222, HIC 58587, N30 2790, PPM 225249, ROT 1769, TD1 16009, TYC 6097-1648-1, uvby98 100104337, TY Crv, YZ 109 5217, SBC9 698, FAUST 2981, HGAM 608, SBC7 448, WEB 10456, Gaia DR2 3518794554458428160, 31 Crt, TIC 428684629, Gaia DR3 3518794554458428160, ALS 14812[14][15][16][17][18][19][20][21][22][23][24][25][26][27]
Constellation
Corvus[6]
Declination
-19.65898117643°[56]
Declination component of proper motion
6.83 (4–7, n=6)[59][60][61][62]
Distance from Earth
592.031 pc[49]
Effective temperature
23,700 K[58]
Epoch
J2000.0[57]
Luminosity
52,262 L☉[36]
Mass
15.5 M☉[37]
Parallax
1.69 (1.03–2.05, n=4)[39][40][41][42]
Radial velocity
1.7 (-73.5–12.3, n=7)[43][44][45][46][47][48]
Radius
10.2 R☉[38]
Right ascension
180.21316317341999°[55]
Right ascension component of proper motion
-17.1 (-17.7–-11, n=6)
Spectral class
B2IV, B2:, B1.5V, B2, B1V, B2V, B3[7][8][9][10][11][12][13]
Stellar rotational velocity
97 (95–138, n=5)[50][51][52][53][54]
Type of variable star
rotating ellipsoidal variable[28]
🏷️ Also known as
en TY Corvi en 31 Crateris da TY Corvi de TY Corvi es 31 Crateris fr TY Corvi it TY Corvi ja コップ座31番星 nl TY Corvi pl TY Corvi pt TY Corvi ru 31 Чаши ru TY Ворона sv TY Corvi uk 31 Чаші
🔖 Identifiers · 4
Image (Wikimedia Commons)
TYCrvLightCurve.png ↗
Freebase ID
/m/013cd2dr
Gaia ID
3518794554458428160
SIMBAD ID
* 31 Crt

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Instance of 3
variable star, spectroscopic binary, rotating ellipsoidal variable
Constellation 1
Corvus
Epoch 1
J2000.0
Type of variable star 1
rotating ellipsoidal variable
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Summary

31 Crateris is a rotating ellipsoidal variable[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . SIMBAD. wikidata.org.
  2. [3] ↑ . SIMBAD. wikidata.org.
  3. [4] ↑ . SIMBAD. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, Declinations -26°.0 to -12°.0.. wikidata.org.
  7. [8] ↑ . First results from the Edinburgh-Cape faint blue object survey - normal stars at high galactic latitudes. wikidata.org.
  8. [9] ↑ . Axial rotation in the brighter stars of Draper types B2-B5. wikidata.org.
  9. [10] ↑ . The Edinburgh-Cape Blue Object Survey - II. Zone 1 - the North Galactic CAP. wikidata.org.
  10. [11] ↑ . The kinematics of the Gould belt: an expanding group ?. wikidata.org.
  11. [12] ↑ . SIMBAD. wikidata.org.
  12. [13] ↑ . VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925). wikidata.org.
  13. [14] ↑ . SIMBAD. wikidata.org.
  14. [15] ↑ . SIMBAD. wikidata.org.
  15. [16] ↑ . SIMBAD. wikidata.org.
  16. [17] ↑ . SIMBAD. wikidata.org.
  17. [18] ↑ . SIMBAD. wikidata.org.
  18. [19] ↑ . SIMBAD. wikidata.org.
  19. [20] ↑ . SIMBAD. wikidata.org.
  20. [21] ↑ . SIMBAD. wikidata.org.
  21. [22] ↑ . SIMBAD. wikidata.org.
  22. [23] ↑ . SIMBAD. wikidata.org.
  23. [24] ↑ . SIMBAD. wikidata.org.
  24. [25] ↑ . SIMBAD. wikidata.org.
  25. [26] ↑ . SIMBAD. wikidata.org.
  26. [27] ↑ . SIMBAD. wikidata.org.
  27. [28] ↑ . wikidata.org.
  28. [29] ↑ . The Tycho-2 catalogue of the 2.5 million brightest stars. wikidata.org.
  29. [30] ↑ . The Tycho-2 catalogue of the 2.5 million brightest stars. wikidata.org.
  30. [31] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  31. [32] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  32. [33] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  33. [34] ↑ . Gaia Early Data Release 3. wikidata.org.
  34. [35] ↑ . wikidata.org.
  35. [36] ↑ . Masses and luminosities of O- and B-type stars and red supergiants. wikidata.org.
  36. [37] ↑ . Masses and luminosities of O- and B-type stars and red supergiants. wikidata.org.
  37. [38] ↑ . wikidata.org.
  38. [39] ↑ . Gaia Data Release 2. wikidata.org.
  39. [40] ↑ . The HIPPARCOS Catalogue. wikidata.org.
  40. [41] ↑ . Validation of the new Hipparcos reduction. wikidata.org.
  41. [42] ↑ . Gaia Early Data Release 3. wikidata.org.
  42. [43] ↑ . Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue. wikidata.org.
  43. [44] ↑ . The orbit of the spectroscopic binary Boss 3138. wikidata.org.
  44. [45] ↑ . Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations. wikidata.org.
  45. [46] ↑ . A rediscussion of the orbits of seventy-seven spectroscopic binaries. wikidata.org.
  46. [47] ↑ . Catalogue of observed velocities. wikidata.org.
  47. [48] ↑ . Radial velocities of 368 helium stars. wikidata.org.
  48. [49] ↑ . Gaia Early Data Release 3. wikidata.org.
  49. [50] ↑ . Catalogue of rotational velocities of the stars. wikidata.org.
  50. [51] ↑ . A catalogue of stellar rotational velocities. wikidata.org.
  51. [52] ↑ . The IACOB project. I. Rotational velocities in northern Galactic O- and early B-type stars revisited. The impact of other sources of line-broadening. wikidata.org.
  52. [53] ↑ . Rotational Velocities of B Stars. wikidata.org.
  53. [54] ↑ . The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars. wikidata.org.
  54. [55] ↑ . Gaia Early Data Release 3. wikidata.org.
  55. [56] ↑ . Gaia Early Data Release 3. wikidata.org.
  56. [57] ↑ . Gaia Data Release 2. wikidata.org.
  57. [58] ↑ . Masses and luminosities of O- and B-type stars and red supergiants. wikidata.org.
  58. [59] ↑ . Gaia Data Release 2. wikidata.org.
  59. [60] ↑ . Validation of the new Hipparcos reduction. wikidata.org.
  60. [61] ↑ . The HIPPARCOS Catalogue. wikidata.org.
  61. [62] ↑ . SIMBAD. wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). 31 Crateris. Retrieved November 11, 2026, from https://4ort.xyz/entity/31-crateris
MLA “31 Crateris.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Nov. 2026, https://4ort.xyz/entity/31-crateris.
BibTeX @misc{4ortxyz_31-crateris_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{31 Crateris}}, year = {2026}, url = {https://4ort.xyz/entity/31-crateris}, note = {Accessed: 2026-11-11}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 16w ago · Dirac · 2026-07-20 view diff on Wikidata ↗
    Stellar rotational velocity → 138 kilometre per second, 135 kilometre per second, 99 kilometre per second +2
    Constellation → Corvus
    Apparent magnitude → 5.08, 5.264, 5.676 +3
    Effective temperature → 23,700 kelvin
    + 16 other properties edited (see Wikidata diff for full list)
    "Created claim: Image: TYCrvLightCurve.png, batch #261337"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.