| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 07h 00m 04.0372s [1] |
| Declination | +76° 58′ 38.671″ [1] |
| Apparent magnitude (V) | +4.551 [2] |
| Characteristics | |
| Spectral type | K4 III [3] |
| B−V color index | 1.399 [2] |
| Astrometry | |
| Radial velocity (Rv) | −29.47±0.19 [4] km/s |
| Proper motion (μ) |
RA: 72.948(83)
mas/
yr
[1] Dec.: −13.442(109) mas/ yr [1] |
| Parallax (π) | 17.0753 ± 0.1093 mas [1] |
| Distance | 191 ± 1
ly (58.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.80 [5] |
| Details | |
| Mass | 1.239±0.217 [6] M☉ |
| Radius | 18.68+0.34 −0.79 [7] R☉ |
| Luminosity | 94.2±1.5 [7] L☉ |
| Surface gravity (log g) | 2.11 [2] cgs |
| Temperature | 4,160+91 −38 [7] K |
| Metallicity [Fe/H] | 0.05 [2] dex |
| Rotational velocity (v sin i) | 1.4 [8] km/s |
| Age | 4.817±2.347 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 49878 (M Camelopardalis) is a single [10] star in the northern circumpolar constellation of Camelopardalis. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.55. [2] The star is located at a distance of approximately 191 light years from the Sun, as determined from its parallax. [1] It is drifting closer with a radial velocity of −29.5 km/s. [4] The star has been listed as a candidate member of the Wolf 630 moving group, but is most likely a field star. [11]
This is an aging giant star with a stellar classification of K4 III, [3] having exhausted the supply of hydrogen at its core and expanded to 19 times the Sun's radius. [7] It is roughly 5 billion years old with 1.24 times the mass of the Sun. [6] The star is radiating 94 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,160 K. [7] It is spinning slowly with a projected rotational velocity of 1.4 km/s. [8]
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv: 1004.1069, Bibcode: 2010A&A...515A.111S, doi: 10.1051/0004-6361/201014247, S2CID 118362423.
- ^ a b Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin, 51: 79, Bibcode: 1962RGOB...51...79E.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b c Dollinger, M. P. (2008), Hunting for extrasolar planets around K giants (PDF), Ludwig-Maximilians-Universität München, Bibcode: 2008PhDT.......232D, retrieved 2020-01-04.
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv: astro-ph/0010273, Bibcode: 2000A&A...363..239D.
- ^ "HD 49878". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-06-06.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ McDonald, A. R. E.; Hearnshaw, J. B. (August 1983), "The Wolf 630 moving group of stars", Monthly Notices of the Royal Astronomical Society, 204 (3): 841–852, Bibcode: 1983MNRAS.204..841M, doi: 10.1093/mnras/204.3.841.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 07h 00m 04.0372s [1] |
| Declination | +76° 58′ 38.671″ [1] |
| Apparent magnitude (V) | +4.551 [2] |
| Characteristics | |
| Spectral type | K4 III [3] |
| B−V color index | 1.399 [2] |
| Astrometry | |
| Radial velocity (Rv) | −29.47±0.19 [4] km/s |
| Proper motion (μ) |
RA: 72.948(83)
mas/
yr
[1] Dec.: −13.442(109) mas/ yr [1] |
| Parallax (π) | 17.0753 ± 0.1093 mas [1] |
| Distance | 191 ± 1
ly (58.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.80 [5] |
| Details | |
| Mass | 1.239±0.217 [6] M☉ |
| Radius | 18.68+0.34 −0.79 [7] R☉ |
| Luminosity | 94.2±1.5 [7] L☉ |
| Surface gravity (log g) | 2.11 [2] cgs |
| Temperature | 4,160+91 −38 [7] K |
| Metallicity [Fe/H] | 0.05 [2] dex |
| Rotational velocity (v sin i) | 1.4 [8] km/s |
| Age | 4.817±2.347 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 49878 (M Camelopardalis) is a single [10] star in the northern circumpolar constellation of Camelopardalis. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.55. [2] The star is located at a distance of approximately 191 light years from the Sun, as determined from its parallax. [1] It is drifting closer with a radial velocity of −29.5 km/s. [4] The star has been listed as a candidate member of the Wolf 630 moving group, but is most likely a field star. [11]
This is an aging giant star with a stellar classification of K4 III, [3] having exhausted the supply of hydrogen at its core and expanded to 19 times the Sun's radius. [7] It is roughly 5 billion years old with 1.24 times the mass of the Sun. [6] The star is radiating 94 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,160 K. [7] It is spinning slowly with a projected rotational velocity of 1.4 km/s. [8]
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv: 1004.1069, Bibcode: 2010A&A...515A.111S, doi: 10.1051/0004-6361/201014247, S2CID 118362423.
- ^ a b Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin, 51: 79, Bibcode: 1962RGOB...51...79E.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b c Dollinger, M. P. (2008), Hunting for extrasolar planets around K giants (PDF), Ludwig-Maximilians-Universität München, Bibcode: 2008PhDT.......232D, retrieved 2020-01-04.
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv: astro-ph/0010273, Bibcode: 2000A&A...363..239D.
- ^ "HD 49878". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-06-06.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ McDonald, A. R. E.; Hearnshaw, J. B. (August 1983), "The Wolf 630 moving group of stars", Monthly Notices of the Royal Astronomical Society, 204 (3): 841–852, Bibcode: 1983MNRAS.204..841M, doi: 10.1093/mnras/204.3.841.