WDS 00251+4803 SOZ 4 AB,D (HD 2057) : NOTES
 
 
discov_num notes refcode
CRZ 2 BDK 2. G 171-58 + 2MASS J00250365+4759191. Distance 42.2 +2.0/-1.8
pc for primary, 31 +/- 6 pc for secondary. Estimated ages of
components are discrepant: 1.8-3.5 Gyr for primary, versus 0.1-0.5 Gyr
for secondary. The primary is a spectroscopic binary resolved by Hip1997a
Hipparcos, the secondary a close (~10au) L4+L4 pair, resolved by Reid Red2006b
(2006). Fah2010
HDS 56 Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 1.30 +/- 0.21, 1.85, and 1.10 Msun, respectively. Mlk2012
RED 14 Ba,Bb: 2MASS J00250365+4759191. Spectral types L4 and L4 Red2006b
 
 
REFERENCES
 
 
refcode metd author reference
Fah2010 C - Faherty, J.K., Burgasser, A.J., West, A.A., Bochanski, J.J., Cruz, K.L., Shara, . 2010AJ....139..176F
Fah2010 M.M., & Walter, F.W
Fah2010 AJ 139, 176, 2010
HIP1997a Hh - Hipparcos 1997yCat.1239....0E
HIP1997a Hipparcos Catalog, ESA SP-1200, 1997 (incl. Hp photometry, vol. 10)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Red2006b Hn j Reid, I.N., Lewitus, E., Allen, P., Cruz, K.L., & Burgasser, A.J., 2006AJ....132..891R
Red2006b +E2 AJ 132, 891, 2006
 
 
DISCOVERER
 
 
idgroup discov author
1 CRZ Cruz, K.L., Reid, I.N., Kirkpatrick, J.D., Burgasser, A.J. Liebert, J.,
1 CRZ Solomon, A.R., Schmidt, S.J., Allen, P.R., Hawley, S.L., & Covey, K.R.
2 HDS Hipparcos Double Star (from additional DD list)
2 SOZ Scholz, R.-D., McCaughrean, M.J., Lodieu, N., & Kuhlbrodt, B.
12 SOZ Niemczura, E., Scholz, R.-D., Hubrig, S., Jarvinen, S.P., Scholler,M., Ilyin, I. &
12 SOZ Kahraman Alicavus, F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00251+4803 SOZ 4 AB,D 2000 1 258 13.7 6.38 12.50 F8+M5 V K 002508.70+480250.9
00251+4803 SOZ 4 AB,D 2015 2 259 13.8 6.38 12.50 F8+M5 V K 002508.74+480251.0

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