Coord 2000 | 06377+1624 | Discov num | BUP 90 | Comp | AC | Coord arcsec 2000 | 06 37 42.71 +16 23 57.4 | ||||
Date first | 1880 | Date last | 2009 | Obs | 5 | ||||||
Pa first | 336 | Pa last | 334.8 | P.A. Now (θ) | 334.8° | ||||||
Sep first | 141.7 | Sep last | 148.05 | Sep. Now (ρ) | 148.05" | ||||||
Mag pri | 1.90 | Mag sec | 12.30 | delta mag (ΔM) | 10.4 | Spectral class | A0IV (white) | ||||
Pri motion ra | +014 | Sec motion ra | |||||||||
Pri motion dec | -055 | Sec motion dec | |||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Alhena | 95912 | 06 37 43 +16 23 57 | OCC 9011 Aa,Ab | 2012 | 2 | 260 | 0.4 | 1.90 | 7.50 | 5.60 | Y | |
Show | 95912 | 06 37 43 +16 23 57 | BUP 90 AB | 2009 | 5 | 296 | 140.5 | 1.90 | 13.00 | 11.10 | |||
Show | 95912 | 06 37 43 +16 23 57 | BUP 90 AC | 2009 | 5 | 335 | 148.1 | 1.90 | 12.30 | 10.40 | <=== |
Common name | Alhena | Constellation | Gemini | SAO | 95912 | HIP | 31681 | ||||
Tycho2 | 1329-01746-1 | HD | 47105 | HR | 2421 | GC | 8633 | ||||
BD | BD+16 1223 | Bayer | Gamma Geminorum | Bayer name | Gam Gem | Flamsteed | 24 Geminorum | ||||
Flamsteed name | 24 Gem | FK5 | 251 | Distance | 33.51 | Distance ly | 109.31 | ||||
Bayer greek | γ Gem |
Other names | ALMEISAN |
Meaning | one who shines / forward |
discov_num | notes | refcode |
BUP 90 | gam Gem = 24 Cen = Alhena. H V 71. Elements P, T, e, and the longitude | Bey1967 |
of periastron are from a spectroscopic orbit. Beardsley's data are | ||
inconsistent; the values of a, i, and the node given here approximate | ||
his ABFG most closely. | ||
See Baize & Petit (1989) catalog of doubles with variable component. | Baz1989d | |
gam Gem | Aa,Ab: Combined astrometric/spectroscopic solution. Fekel & Tomkin | Kpr1987b |
(1993) derive a spectroscopic period of 4614.0 +/- 0.7 days, as well | Fek1993 | |
as an approximate magnitude difference of 6.0 +/- 0.5 mag in V. | ||
An additional spectroscopic solution by Scholz et al. (1997) yielded a | Slz1997 | |
period of 4614.51 +/- 0.47; Lehmann et al. (2002) found a similar | Leh2002 | |
period and also looked for short-period variations. | ||
OCC 9011 | Aa,Ab: Drummond (2014) resolves the Aa,Ab pair, previously detected | |
only by occultation. Setting scale of the astrometric/spectroscopic | ||
orbit, and combining with the van Leeuwen (2007) Hipparcos parallax, | ||
he derives component masses 3.4 +/- 0.8 and 1.4 +/- 0.3 Msun. | Dru2014 | |
Intensity Interferometer Limb-darkened diameter 1.39 +/- 0.09 mas. | HBr1974 |
refcode | metd | author | reference |
Baz1989d | - | Baize, P. & Petit, M. | 1989A&AS...77..497B |
Baz1989d | A&AS 77, 497, 1989 | ||
Bey1967 | orb - | Beardsley, W.R. | 1967IAUS...30..189B |
Bey1967 | IAU Symp. 30, 189, 1967 | ||
Dru2014 | A j | Drummond, J.D. | 2014AJ....147...65D |
Dru2014 | +orb | AJ 147, 65, 2014 | |
Dru2014 | (Note: slight modifications to published measures, as well as additional measures, | ||
Dru2014 | provided by Drummond, private comm.) | ||
Fek1993 | - | Fekel, F.C. & Tomkin, J. | 1993AJ....106.1156F |
Fek1993 | AJ 106, 1156, 1993 | ||
HBr1974 | - | Hanbury Brown, R., Davis, J., & Allen, L.R. | 1974MNRAS.167..121H |
HBr1974 | MNRAS 167, 121, 1974 | ||
Kpr1987b | orb - | Kamper, K.W. & Beardsley, W.R. | 1987AJ.....94.1302K |
Kpr1987b | AJ 94, 1302, 1987 | ||
Leh2002 | orb - | Lehmann, H., Andrievsky, S.M., Egorova, I. Hildebrandt, G., Korotin, S.A., | 2002A&A...383..558L |
Leh2002 | Panov, K.P., Scholz, G., & Schoenberner, D. | ||
Leh2002 | A&A 383, 558, 2002 | ||
Slz1997 | - | Scholz, G., Lehmann, H., Harmanec, P., Gerth, E., & Hildebrandt, G. | 1997A&A...320..791S |
Slz1997 | A&A 320, 791, 1997 |
idgroup | discov | author |
1 | BUP | Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913) |
1 | OCC | Taylor, G.E., O'Leary, B., van Fladern, T.C. Bartholdi, P., Owen, F., |
1 | OCC | Hubbard, W.B., Smith, B.A., Smith, S.A., Fallon, F.W. Devinney, E.J. & Oliver, J. |
6 | OCC | Dunham, D.W., Dunham, J.B., Binzel, R.P., Evans, D.S., Freuh, M., Henry, G.W., |
6 | OCC | A'Hearn, M.A., Schnurr, R., Betts, R., Haynes, H., Orcutt, R., Bowell, E., et al. |
9 | OCC | Vasundhara, R., Jayakumar, K., Velu, C., Appakutty, M., Paranjpye, A., |
9 | OCC | Kulkarni, H., Nitsure, P., Prabhunne, M. & Shah, K. |
16 | OCC | Lin, C.-L., Zhang, Z.-W., Chen, W.P., King, S.-K., Lin, H.-C., Bianco, F.B., |
16 | OCC | Lehner, M.J., Coehlo, N., Wang, J.-H., Mondal, S., Alcock, C., Axelrod, T., et al. |
17 | OCC | Herald, D., Boyle, R., Dunham, D., Hirose, T., Maley, P., Timerson, B., Farris, |
17 | OCC | T., Frappa, E., Lecacheux, J., Hayamizu, T., Kozubal, M., Nolthenius, R., et al. |
22 | OCC | Loader, B., Asada, Y., Breit, D., Bradshaw, J., Gault, D., Herald, D., Iverson, |
22 | OCC | E., Ishida, M., Karasaki, H., Kashiwagura, M., Miyashita, K., Messner, S., et al. |
25 | OCC | Loader, B. Bradshaw, J., Breit, D., Gault, D., George, T., Herald, D., Iverson, |
25 | OCC | E., Ishida, M., Karasaki, H., Kashiwagura, M., Kenmotsu, K., Lowe, D., et al. |
26 | OCC | George, T., Timerson, B., Cooke, B., Degenhardt, S., Dunham, D.W., Messner, S., |
26 | OCC | Suggs, R., Venable, R. & Warren, W.H. |
27 | OCC | George, T., Timerson, B., Beard, T., Blank, T., Dantowitz, R., Davis, J., |
27 | OCC | di Cicco, D., Dunham, D.W., Hill, M., Sliski, A. & Sumner, R. |
28 | OCC | Bulder, H., Loader, B., Herald, D., Messner, S., Ling, A., Raab, H., |
28 | OCC | Culbertson, B., Black, S., Ishida, M., Ohno, T., & Miyashita, K. |
29 | OCC | George, T., Timerson, B., Degenhardt, S., Bracken, C., Cadmus, R., Carcich, A., |
29 | OCC | Centala, J., Modic, R., & Slauson, D. |
30 | OCC | Loader, B., Asada, Y., Bradshaw, J., Breit, D., Fuertes, J., Gault, D., George,T., |
30 | OCC | Graham, P., Herald, D., Holenstein, B., Iverson, E., Ishida, M., et al. |
31 | OCC | George, T., Timerson, B., Brooks, J., Conrad, S., Dunham, J.B., Dunham, D.W., |
31 | OCC | Jones,R., Lipka, T.R., Thomas, W., Warren, W.J., Jr., Wasson, R. & Wisniewski, J. |
48 | OCC | Loader, B., Bradshaw, J., Breit, D., Edens, E., Forbes, M., Gault, D., George, T., |
48 | OCC | Haymes, T., Herald, D., Holenstein, B., Ito, T., Iverson, E., et al. |
49 | OCC | Soma, M., Hayamizu, T., Ishida, M., Owada, M., Ida, M., Aikawa, R., Hashimoto, A., |
49 | OCC | Horaguchi, T., Kitazaki, K., Uchiyama, S., Uehara, S., Yaeza, A., et al. |
50 | OCC | Loader, B., Asai, A., Bardecker, J., Bradshaw, J., Breit, D., Buettner, D., |
50 | OCC | Chad, C., Denyer, P., Edens, E., Forbes, M., Gault, D., George, T., et al. |
53 | OCC | Loader, B., Anderson, P., Asai, A., Bradshaw, J., Breit, D., Forbes, M., |
53 | OCC | Gault, D., George, T., Haymes, T., Herald, D., Ishida, M., Kerr, S., et al. |
56 | OCC | Timerson, B., George, T., Bean, J., Blank, T., Bardecker, J., Dunham, D., Dunham, |
56 | OCC | J., Gimple, B., Maley, P., Anthony, S., Wiesenborn, C., Hunt, T., Sumner, R. & |
56 | OCC | Thomas, W. |
57 | OCC | Hirose, T., Ida, M., Yamamura, H., Uchiyama, S., Hashimoto, A., Aikawa, R., |
57 | OCC | Terakubo, K., Sato, M. & Shima, K. |
58 | OCC | Loader, B., Asada, Y., Asai, A., Bardecker, J., Bourgeois, J., Bradshaw, J., Chad, |
58 | OCC | C., Ellington, C., Gault, D., Giacchini, B., Haymes, T., Herald, D., Ishida, M., |
58 | OCC | Iverson, E., Kerr, S., Manek, J., McKay, G., Messner, S., Pratt, A., Sandy, R., |
58 | OCC | Watanabe, H., Yamamura, H. & Yoshida, H. |
61 | OCC | Perello, C., Frappa, E., Janik, T., Kattentidt, B., Polak, J., Rottenborn, M. & |
61 | OCC | Selva, A. |
66 | OCC | Gault, D., Barry, T., Nosworthy, P., Hanna, W., Messner, S., Oesper, D., Dunford, |
66 | OCC | R., Trank, R., Preston, S. & Herald, D. |
71 | OCC | Frappa, E., Zeleny, P., Baruffetti, P., Bendjeddou, A., Bigi, M., Bouazara, O., |
71 | OCC | Gacem, A., Khenifer, H.M., Mokhtari, L., Nosal, P., Rayane, H., Selimi, T.E.M., |
71 | OCC | Sposetti, S. & Aissa, D.B. |
72 | OCC | Hayamizu, T., Soma, M., Watanabe, Hi., Asai, A., Watanable, Ha., Akira, A., |
72 | OCC | Ida, M., Uchiyama, S., Nagata, T., Yamamura, H., Owada, M. & Yamashita, M. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
06377+1624 | BUP 90 | AC | 1907 | 2 | 335 | 143.5 | 1.93 | 10.90 | A0IV | N | 063742.70+162357.9 |
06377+1624 | BUP 90 | AC | 2009 | 4 | 335 | 148.1 | 1.93 | 10.90 | A0IV | N D | 063742.70+162357.9 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | Ab | B | |
Ab | pa=259.1° sep=0.36" | ||
B | pa=297.4° sep=135.93" | pa=297.5° sep=135.64" | |
C | pa=335.7° sep=146.97" | pa=335.8° sep=146.89" | pa=40.1° sep=93.49" |
Common name | Alhena | Meaning | one who shines / forward | Other names | ALMEISAN | Coord arcsec 2000 | 063742.71+162357.4 | ||||
Mag | 1.9 | Spectral class | A0IV (white) | PmRA | 14.00 | PmDE | -55.0 | ||||
SAO | 95912 | HIP | 31681 | Tycho2 | 1329-01746-1 | HD | 47105 | ||||
HR | 2421 | GC | 8633 | BD | BD+16 1223 | Bayer | Gamma Geminorum | ||||
Bayer name | Gam Gem | Flamsteed | 24 Geminorum | Flamsteed name | 24 Gem | FK5 | 251 |
SAO | 95912 | DelFlag | RA1950 | PmRA1950 | 0.003 | ||||||
DE1950 | PmDE1950 | -0.044 | Vmag | 1.9 | SpType | A0 | |||||
Double code | Source | 74 | CatNum | 251 | DM | BD+16 1223 | |||||
DMcomp | BDsup | HD | 47105 | M HD | 0 | ||||||
GC | 8633 | RA1950rad | 1.72274148 | DE1950rad | 0.28699709 | PmRA2000 | 0.003 | ||||
PmDE2000 | -0.042 |
Catalog | H | HIP | 31681 | Proxy | RAhms | 06 37 42.70 | |||||
DEdms | +16 23 57.9 | Vmag | 1.93 | VarFlag | R Vmag | G | |||||
RAdeg | 99.4279 | DEdeg | 16.3994 | AstroRef | Plx | 31.12 | |||||
CCDM | 06377+1624 | N CCDM | I | Nsys | 1 | Ncomp | 1 | ||||
MultFlag | X | Source | Qual | M HIP | |||||||
Theta | Rho | HD | 47105 | BD | BD+16 1223 | ||||||
CD | CP | Dm number | +16 1223 | VIred | 0.04 | ||||||
SpType | A0IV | R SpType | Coord arcsec 2000 | 063742.70+162357.9 |
HIP | 31681 | Sn | 1 | So | 2 | Nc | 1 | ||||
RArad | 1.7353446674 | DErad | 0.2862237699 | Plx | 29.84 | PmRA | 13.81 | ||||
PmDE | -54.96 | E RArad | 2.12 | E DErad | 1.53 | E Plx | 2.23 | ||||
E pmRA | 2.36 | E pmDE | 1.77 | Hpmag | 1.929 | E Hpmag | 0.0008 | ||||
SHp | 0.004 | VA | 0 | BV | 0.001 | E BV | 0.005 | ||||
VI | 0.04 |
Ccdm | 06377+1624 | RComp | Comp | A | Note1 | ||||||
Note2 | @ | Discov num | DRAs | 0.72 | DDEs | -2.6 | |||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 3 | Vmag | 1.9 | Sp | A0 | PmNote | * | ||||
PmRA | 43 | PmDE | -44 | Dm number | +16 1223 | Cat1 | BD | ||||
Name2 | 95912 | Cat2 | SAO | HD | 47105 | M HD | |||||
ADS BDS | M ADS BDS | N IDS | IDS | 06319N1629A | |||||||
HIC | 31681 |
Coord arcsec 2000 | 063742.69+162357.3 | Mag | 7.5 | Calc delta mag | 5.6 | Calc coord | yes |
Coord arcsec 2000 | 063734.32+162459.9 | Mag | 13 | Calc delta mag | 11.1 | Calc coord | yes |
Ccdm | 06377+1624 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | BUP | DRAs | DDEs | |||||||
R dRAs | Year | 1907 | Theta | 295 | Rho | 135.5 | |||||
Obs | 2 | Vmag | 11.2 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | M ADS BDS | N IDS | IDS | 06319N1629B | |||||||
HIC |
Coord arcsec 2000 | 063738.51+162611.4 | Mag | 12.3 | Calc delta mag | 10.4 | Calc coord | yes |
Ccdm | 06377+1624 | RComp | Comp | C | Note1 | ||||||
Note2 | Discov num | BUP | DRAs | DDEs | |||||||
R dRAs | Year | 1907 | Theta | 335 | Rho | 143.5 | |||||
Obs | 2 | Vmag | 10.9 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | M ADS BDS | N IDS | IDS | 06319N1629C | |||||||
HIC |