HR 1884

Short description: Binary star system in the constellation Auriga

HR 1884

Location of HR 1884 (circled)

Observation data
Equinox J2000.0]] (ICRS)
Constellation | Auriga
Right ascension |  05h 36m 52.41522s[1]
Declination | +40° 10′ 56.5783″[1]
Apparent magnitude (V) | 6.08[2]
Characteristics
Spectral type | G3 Ib[3] \+ B7 V?[4]
U−B color index | 0.69[2]
B−V color index | 1.03[2]
Astrometry
Radial velocity (Rv)| −12.06±0.03[4] km/s
Proper motion (μ)|  RA: −2.99±1.03[5] mas/yr
Dec.: −4.56±0.67[5] mas/yr
Parallax (π)| 1.9414 ± 0.0574[1] mas
Distance| 1,680 ± 50 ly
(520 ± 20 pc)
Absolute magnitude (MV)| −2.79[6]
Orbit[4]
Period (P)| 7829.3±1.4 days
Eccentricity (e)| 0.8867±0.0006
Periastron epoch (T)| 54417.21±0.22
Argument of periastron (ω)
(secondary)| 250.61±0.20°
Semi-amplitude (K1)
(primary)| 21.77±0.04 km/s
Details
Radius| 45.78+2.89
−3.69[1] R☉
Luminosity| 1,094±43[1] L☉
Surface gravity (log g)| 1.78[7] cgs
Temperature| 4,907+210
−149[1] K
Metallicity [Fe/H]| +0.04[7] dex
Rotational velocity (v sin i)| 6.2[8] km/s
Other designations

Database references
SIMBAD| data

HR 1884 is a spectroscopic binary star in the constellation Auriga. The primary is a G type supergiant star while the secondary is probably a B type main sequence star.[4]

The possible spectroscopic binary nature of the star was first noted in 1983 by Gilbert Burki and Michel Mayor in a paper on the rate of binaries among supergiant stars.[9] In the same year, William P. Bidelman noted that the stellar spectrum was composite indicating a companion star.[10] Confirmation of spectroscopic binary status and a preliminary orbit was published in 1998 by R. Paul Butler,[11] a much more accurate orbit was published in 2015 by Roger Griffin.[4]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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 Argue, A. N. (1966). "UBV photometry of 550 F, G and K type stars". Monthly Notices of the Royal Astronomical Society 133 (4): 175–493. doi:10.1093/mnras/133.4.475. Bibcode: 1966MNRAS.133..475A.
3. ↑ Bidelman, William P. (1957). "Spectral Classification of Stars Noted on Case Objective-Prism Plates. I". Publications of the Astronomical Society of the Pacific 69 (407): 147–152. doi:10.1086/127034. Bibcode: 1957PASP...69..147B.
4. ↑ 4.0 4.1 4.2 4.3 4.4 Griffin, R. F. (2015). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 241: HR 1884, HD 174103, HD 182563, and HR 8442, with a note on zeta Cephei". The Observatory 135: 71–95. Bibcode: 2015Obs...135...71G.
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. Vizier catalog entry
6. ↑ Kovtyukh, V. V.; Chekhonadskikh, F. A.; Luck, R. E.; Soubiran, C.; Yasinskaya, M. P.; Belik, S. I. (2010). "Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios". Monthly Notices of the Royal Astronomical Society 408 (3): 1568. doi:10.1111/j.1365-2966.2010.17217.x. Bibcode: 2010MNRAS.408.1568K.
7. ↑ 7.0 7.1 Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal 147 (6): 137. doi:10.1088/0004-6256/147/6/137. Bibcode: 2014AJ....147..137L.
8. ↑ De Medeiros, J. R.; Udry, S.; Burki, G.; Mayor, M. (2002). "A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars". Astronomy and Astrophysics 395: 97–98. doi:10.1051/0004-6361:20021214. Bibcode: 2002A&A...395...97D.
9. ↑ Burki, G.; Mayor, M. (1983). "Nineteen new spectroscopic binaries and the rate of binary stars among F-M supergiants". Astronomy and Astrophysics 124 (2): 256–266. Bibcode: 1983A&A...124..256B.
10. ↑ Bidelman, W. P. (1983). "Objective-prism discoveries in the northern sky. I". Astronomical Journal 88: 1182–1186. doi:10.1086/113408. Bibcode: 1983AJ.....88.1182B.
11. ↑ Butler, R. Paul (1998). "A Precision Velocity Study of Photometrically Stable Stars in the Cepheid Instability Strip". Astrophysical Journal 494 (1): 342–365. doi:10.1086/305195. Bibcode: 1998ApJ...494..342B.

* v
* t
* e

Auriga constellation

Stars (list)|

| Bayer|

* α (Capella)
* β (Menkalinan)
* δ
* ε (Almaaz)
* ζ (Saclateni)
* η (Haedus)
* θ (Mahasim)
* ι (Hassaleh)
* κ
* λ (Alhurr)
* μ
* ν
* ξ
* ο
* π
* ρ
* σ
* τ
* υ
* φ
* χ
* ψ1
* ψ2
* ψ3
* ψ4
* ψ5
* ψ6
* ψ7
* ψ8
* ψ9
* ω

|

Flamsteed|

* 2
* 5
* 6
* 9
* 12
* 14
* 16
* 18
* 19
* 22
* 26
* 28
* 36
* 38
* 39
* 40
* 41
* 42
* 43
* 45
* 47
* 49
* 51
* 53
* 54
* 59
* 60
* 62
* 63
* 64
* 65
* 66
* 25 Cam
* 33 Cam
* 34 Cam
* 35 Cam

Variable|

* R
* T
* RT (48)
* RU
* RW
* RX
* SS
* SU
* SX
* SY
* TT
* TZ
* UU
* UV
* UY
* ZZ
* WW
* AB
* AE
* AP
* AR (17)
* BF
* BK
* CL
* CQ
* EO
* FS
* GM
* HL
* HP
* HS
* HZ
* IM
* IQ
* IU
* KR
* LY
* MZ
* NO
* NV
* NY
* PU
* QR
* V352
* V363
* V382
* V390
* V394
* V403
* V405
* V410
* V414
* V420
* V433
* V440
* V538

HR|

* 1501
* 1528
* 1529
* 1535
* 1550
* 1558
* 1573
* 1615
* 1626
* 1639
* 1644
* 1668
* 1669
* 1692
* 1725
* 1733
* 1738
* 1752
* 1760
* 1775
* 1776
* 1794
* 1795
* 1796
* 1804
* 1822
* 1824
* 1825
* 1850
* 1854
* 1866
* 1869
* 1884
* 1904
* 1938
* 1945
* 1979
* 2003
* 2025
* 2038
* 2046
* 2066
* 2080
* 2081
* 2096
* 2105
* 2110
* 2112
* 2115
* 2122
* 2137
* 2139
* 2141
* 2147
* 2153
* 2172
* 2188
* 2189
* 2272
* 2319
* 2434
* 2452
* 2464
* 2471
* 2532
* 2542
* 2556
* 2573
* 2675
* 2775
* 2792

HD|

* 33463
* 33632
* 34078
* 34656
* 35202
* 35619
* 35681
* 37250
* 38200
* 38229
* 40650
* 40979
* 43691
* 45350
* 49364
* 49674 (Nervia)
* 51021
* 56171

Gliese|

* Gliese 268

Other|

* G 87-7
* GD 66
* HAT-P-9
* KELT-2A
* MWC 480
* SGR 0501+4516
* UGPS J0521+3640
* WASP-12

Star clusters|

| Open|

* Messier 36
* Messier 37
* Messier 38
* NGC 1664
* NGC 1724
* NGC 1778
* NGC 1798
* NGC 1857
* NGC 1883
* NGC 1893
* NGC 1907
* NGC 1931
* NGC 2013
* NGC 2126
* NGC 2165
* NGC 2192
* NGC 2240
* NGC 2281

|

Globular|

* Palomar 2

Nebulae|

| Star-forming|

* AFGL 5142
* IC 405 (Flaming Star Nebula)
* IRAS 05345+3157
* IRAS 05358+3543
* L1512
* L1517B
* S235
* S235 B

|

Planetary|

* IC 2149
* NGC 2242

SNR|

* HB 9
* VRO 42.05.01

Galaxies|

| NGC|

* 2208
* 2303
* 2387

|

Other|

* 3C 147
* 4C 41.17
* DA 93
* MCG +8-11-11
* OH 471
* QSO B0710+439
* QSO B0711+356

Galaxy
clusters|

* MACS J0717.5+3745

Other|

* GRB 910503
* GRB 980329

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