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12 Victoria (A850 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204390913471252 2.4472e-08  
a 2.333777698677048 2.3631e-09 au
q 1.819321863374495 5.7283e-08 au
i 8.372748506371842 2.5112e-06 deg
node 235.4010322830478 1.9021e-05 deg
peri 69.69422268903102 1.9933e-05 deg
M 243.8347334038363 7.3893e-06 deg
tp 2459420.705224463486
(2021-Jul-25.20522446)
2.7097e-05 TDB
period 1302.229876790475
3.57
1.9779e-06
5.415e-09
d
yr
n .2764488869563257 4.1988e-10 deg/d
Q 2.848233533979602 2.884e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3260  
   data-arc span      62043 days (169.86 yr)  
   first obs. used      1850-09-18  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:07:55  

Additional Information
 Earth MOID = .82468 au 
 Jupiter MOID = 2.43354 au 
 T_jup = 3.522 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452164.5 (2001-Sep-12.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195165855761241 2.4488e-08  
q 1.823042277151902 5.733e-08 au
tp 2451605.548155798463
(2000-Mar-02.04815580)
2.2816e-05 TDB
node 235.6052974445974 1.904e-05 deg
peri 69.65931360094555 1.9963e-05 deg
i 8.363852645250111 2.5098e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3260  
   data-arc span      62043 days (169.86 yr)  
   first obs. used      1850-09-18  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:07:55  

Additional Information
 Jupiter MOID = 2.43354 au 
 T_jup = 3.522 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.99643655584741E-16 -1.403153579515356E-15 -6.96829736995677E-14 6.645009694737209E-15 -1.066144391478266E-14 -7.975618777500164E-16
q -1.403153579515356E-15 3.286685044786399E-15 1.659211083453149E-13 -1.559030315286416E-14 2.551830983659602E-14 1.891596260972332E-15
tp -6.96829736995677E-14 1.659211083453149E-13 5.205790818691844E-10 -5.921195252950733E-12 1.459050520570876E-10 1.600551771924298E-12
node 6.645009694737209E-15 -1.559030315286416E-14 -5.921195252950733E-12 3.625229791943657E-10 -3.596352646505841E-10 1.169930460157808E-12
peri -1.066144391478266E-14 2.551830983659602E-14 1.459050520570876E-10 -3.596352646505841E-10 3.98537528543867E-10 -7.451094087361118E-13
i -7.975618777500164E-16 1.891596260972332E-15 1.600551771924298E-12 1.169930460157808E-12 -7.451094087361118E-13 6.298864830130219E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.3   n/a MPO502153 IRAS observations used: 6
magnitude slope G 0.22   n/a PDS3 (MPC 17257) Fit
diameter diameter 115.087 km 1.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.6599 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 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) Planet. 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 Bull. 40, 161-163.]
[Melillo, F.J. (2015) Minor Planet Bull. 42, 94-95.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Viikinkoski, M.; Hanus, J.; Kaasalainen, M.; Marchis, F.; Durech, J. (2017) Astron. Astrophys. 607, A117.]
geometric albedo albedo 0.163   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.874   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=3.49, mean=11.59, max.=21.82) deg.
U-B UB 0.515   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A850 RA)          Discovered 1850-Sep-13 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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