42 Camelopardalis

Short description: Star in the constellation Camelopardalis

42 Camelopardalis  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Camelopardalis
Right ascension |  06h 50m 57.08877s[1]
Declination | +67° 34′ 18.9814″[1]
Apparent magnitude (V) | 5.14[2]
Characteristics
Spectral type | B4 IV[3] or B5 V[2]
B−V color index | −0.152±0.002[2]
Astrometry
Radial velocity (Rv)| 3.2±1.2[4] km/s
Proper motion (μ)|  RA: +0.55[5] mas/yr
Dec.: +5.02[5] mas/yr
Parallax (π)| 4.2456 ± 0.2405[1] mas
Distance| 770 ± 40 ly
(240 ± 10 pc)
Absolute magnitude (MV)| −2.10[2]
Details
Mass| 6.5±0.2[6] M☉
Radius| 5.6[7] R☉
Luminosity (bolometric)| 2,460[8] L☉
Temperature| 16,550[8] K
Rotational velocity (v sin i)| 105[9] km/s
Age| 50.1±11.7[6] Myr
Other designations

42 Cam, BD+67°454, FK5 2523, GC 8902, HD 48879, HIP 32864, HR 2490, SAO 13973[10]

Database references
SIMBAD| data

42 Camelopardalis is a single[11] star in the constellation Camelopardalis,[10] located roughly 770 light years away from the Sun.[1] It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.14.[2] The visual magnitude of the star is diminished by an extinction of 0.22 due to interstellar dust.[12] It is moving further from the Earth with a heliocentric radial velocity of 3 km/s.[4] 42 Camelopardalis has a peculiar velocity of 24.4+1.9
−2.1 km/s and may be a runaway star.[6]

Observations made in 1933 appeared to suggest this could be a Beta Cephei variable,[13] but this was not confirmed by follow-up measurements.[14] The star has a stellar classification of B4 IV,[3] matching a B-type subgiant star. It has 6.5[6] times the mass of the Sun and about 5.6[7] times the Sun's radius. 42 Camelopardalis is 50[6] million years old with a high rotation rate, showing a projected rotational velocity of 105 km/s.[9] It is radiating 2,460[8] times the luminosity of the Sun from its photosphere at an effective temperature of 16,550 K.[8] This star is notable as demonstrating similarities between the short-period B-type variables and the Cepheid variables.[citation needed]

## References

1. ↑ 1.0 1.1 1.2 1.3 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
2. ↑ 2.0 2.1 2.2 2.3 2.4 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
3. ↑ 3.0 3.1 Lesh, Janet Rountree (December 1968), "The Kinematics of the Gould Belt: an Expanding Group?", Astrophysical Journal Supplement 17: 371, doi:10.1086/190179, Bibcode: 1968ApJS...17..371L
4. ↑ 4.0 4.1 Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters 32 (11): 759–771, doi:10.1134/S1063773706110065, Bibcode: 2006AstL...32..759G.
5. ↑ 5.0 5.1 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
6. ↑ 6.0 6.1 6.2 6.3 6.4 Tetzlaff, N. et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society 410 (1): 190–200, doi:10.1111/j.1365-2966.2010.17434.x, Bibcode: 2011MNRAS.410..190T.
7. ↑ 7.0 7.1 Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics 367: 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
8. ↑ 8.0 8.1 8.2 8.3 Hohle, M. M. et al. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten 331 (4): 349, doi:10.1002/asna.200911355, Bibcode: 2010AN....331..349H.
9. ↑ 9.0 9.1 Strom, Stephen E. et al. (2005), "B Star Rotational Velocities in h and χ Persei: A Probe of Initial Conditions during the Star Formation Epoch?", The Astronomical Journal 129 (2): 809–828, doi:10.1086/426748, Bibcode: 2005AJ....129..809S.
10. ↑ 10.0 10.1 "42 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=42+Cam.
11. ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
12. ↑ Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters 38 (11): 694–706, doi:10.1134/S1063773712110035, Bibcode: 2012AstL...38..694G.
13. ↑ Edwards, D. L. (1933), "Variations in the Spectrum of 42 Camelopardalis", Monthly Notices of the Royal Astronomical Society 93 (9): 729–735, doi:10.1093/mnras/93.9.729, Bibcode: 1933MNRAS..93..729E.
14. ↑ Heard, John F. (March 1949), "An Analysis of Radial-Velocity Measures of Eight Stars Formerly Assigned to the Beta Cephei Group.", Astrophysical Journal 109: 185, doi:10.1086/145122, Bibcode: 1949ApJ...109..185H.

* v
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Constellation of Camelopardalis

* List of stars in Camelopardalis
* Camelopardalis in Chinese astronomy

Stars|

| Bayer|

* α
* β
* γ

|

Flamsteed|

* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 11
* 12
* 14
* 15
* 16
* 17
* 18
* 19
* 20
* 21
* 22
* 23
* 24
* 26
* 28
* 29
* 30
* 31
* 36
* 37
* 38
* 39
* 40
* 41
* 42
* 43
* 47
* 49
* 51
* 53

Variable|

* R
* U
* X
* Y
* Z
* RU
* RW
* RX
* SS
* ST
* SV
* SZ
* TW
* TX
* UY
* VZ
* WW
* XX
* AH
* AL
* AO
* AS
* AY
* BD
* BE
* BK
* BL
* BN
* BY
* BZ
* CE
* CI
* CO
* CQ
* CS
* FR
* HT
* KZ
* MU
* MY

HR|

* 967
* 1033
* 1043
* 1046
* 1068
* 1071
* 1073
* 1077
* 1112
* 1124
* 1129
* 1138
* 1147
* 1158
* 1161
* 1166
* 1192
* 1196
* 1204
* 1205
* 1241
* 1242
* 1248
* 1255
* 1270
* 1276
* 1281
* 1282
* 1296
* 1305
* 1313
* 1314
* 1327
* 1335
* 1342
* 1352
* 1382
* 1401
* 1440
* 1468
* 1491
* 1510
* 1515
* 1527
* 1546
* 1561
* 1572
* 1587
* 1589
* 1593
* 1594
* 1624
* 1636
* 1647
* 1650
* 1675
* 1683
* 1686
* 1688
* 1720
* 1844
* 1853
* 1916
* 1976
* 1994
* 2041
* 2078
* 2121
* 2126
* 2209
* 2285
* 2363
* 2365
* 2396
* 2401
* 2527
* 2581
* 2617
* 2681
* 2709
* 2809
* 2830
* 3075
* 3082
* 3108
* 3112
* 3191
* 3216
* 3352
* 3379
* 3581
* 3666
* 3934
* 4062
* 4084
* 4429
* 4606
* 4609 (Tonatiuh)
* 4639
* 4852
* 4892
* 4893
* 5009
* 5091
* 5131
* 5203

HD|

* 25225
* 34200
* 34450
* 38058
* 40568
* 69054
* 74462
* 77246

Other|

* AFGL 490
* BD +75 325
* G 191-B2B
* 2MASS 0532+8246
* Gliese 445
* NGC 2363-V1
* PSR B0329+54
* PSR B0655+64
* PSR B0809+74
* SCR 0630-7643
* Stein 2051
* Struve 1694
* V0332+ 53
* WISE J140533.32+835030.5
* XO-3

| Exoplanets|

* HD 32518 b
* HD 33564 b
* HD 104985 b
* XO-3b

|

| Star clusters|

* NGC 1502
* NGC 1708

|

| Nebulae|

* IC 3568 (Lemon Slice Nebula)
* NGC 1501
* NGC 2404
* M 4-18

|

Galaxies|

| NGC|

* 1469
* 1485
* 1530
* 1560
* 1569
* 1573
* 1573A
* 1961
* 2128
* 2146
* 2146A
* 2256
* 2258
* 2268
* 2314
* 2336
* 2336A
* 2347
* 2363
* 2366
* 2403
* 2441
* 2460
* 2523
* 2523A
* 2523B
* 2523C
* 2544
* 2550
* 2550A
* 2551
* 2591
* 2633
* 2634
* 2634A
* 2636
* 2646
* 2655
* 2715
* 2732
* 2748
* 3901
* 4127
* 5295
* 5640

|

Other|

* 3C 179
* 3C 184
* IC 342
* IRAS 07598+6508
* MACS0647-JD
* Markarian 3
* Markarian 6
* Markarian 10
* Markarian 78
* PG 0804+761
* QSO B1150+812
* S4 0636+68
* S5 0716+714
* UGCA 86
* VII Zw 31

| Galaxy clusters|

* MACS J0647.7+7015
* MS 0735.6+7421

|

| Astronomical events|

* GRB 970508
* GRB 060124
* GRB 061126
* SN 1987M
* SN 2004dj
* SN 2010lt

|

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