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12 Victoria
Classification: Main-belt Asteroid          SPK-ID: 2000012
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213655992552831 2.726e-08  
a 2.333779579221686 2.0909e-09 AU
q 1.817161064137536 6.4012e-08 AU
i 8.36863074093776 2.6881e-06 deg
node 235.4905669433678 2.1058e-05 deg
peri 69.55139176512584 2.1941e-05 deg
M 355.8351727479684 7.0121e-06 deg
tp 2456815.565469540781
(2014-Jun-07.06546954)
2.5375e-05 JED
period 1302.231450784802
3.57
1.75e-06
4.791e-09
d
yr
n .2764485528152791 3.7151e-10 deg/d
Q 2.850398094305837 2.5537e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2291  
   data-arc span      59442 days (162.74 yr)  
   first obs. used      1850-09-18  
   last obs. used      2013-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62721  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 13:05:17  

Additional Information
 Earth MOID = .821684 AU 
 T_jup = 3.522 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.24 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
magnitude slope G 0.22   n/a PDS3 (MPC 17257) Fit
diameter diameter 112.77 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.6599 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Tempesti, P.; Burchi, R. (1969) Mem. Soc. Astron. Ital. 40, 415-432.]
[Burchi, R.; D'Ambrosio, V.; Tempesti, P.; Lanciano, N. (1985) Astron. Astrophys. Suppl. Ser. 60, 9-15.]
[Erikson, A. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 55-58.]
[Dotto, E.; De Angelis, G.; Di Martino, M.; Barucci, M.A.; et al. (1995) Icarus 117, 313-327.]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planetary and Space Sci. 49, 657-671.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2013) Minor Planet Bul. 40, 161-163.]
geometric albedo albedo 0.1765   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV .874 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=3.49, mean=11.59, max.=21.82) deg.
U-B UB .515 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=3.49, mean=13.00, max.=21.82) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

12 Victoria          Discovered 1850-Sep-13 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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