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93 Minerva (A867 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000093
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390662331491699 3.4368e-08  
a 2.75637688389533 7.3705e-09 au
q 2.37305793351256 9.5776e-08 au
i 8.55642409224102 3.7881e-06 deg
node 4.03097559157539 2.2893e-05 deg
peri 274.9405842890119 2.6913e-05 deg
M 203.1480034011558 1.4826e-05 deg
tp 2459728.772441259323
7.0148e-05 TDB
period 1671.499786667606
n .215375438795428 8.6386e-10 deg/d
Q 3.139695834278101 8.3954e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2638  
   data-arc span      54845 days (150.16 yr)  
   first obs. used      1870-02-25  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:58:15  

Additional Information
 Earth MOID = 1.37608 au 
 Jupiter MOID = 2.06565 au 
 T_jup = 3.313 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.9   n/a MPO502153  
diameter diameter 154.155 km 1.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.982 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Debehogne, H.; Lagerkvist, C.-I.; Zappala, V. (1982) Astron. Astrophys. Suppl. Ser. 50, 277-281.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Tungalag, N.; Shevchenko, V.G.; Lupishko, D.F. (2002) Kin. Fiz. Neb. Tel 18, 508-516; Kinematics and Physics of Celestial Bodies 18, ???-???.]
[Torppa, J.; Hentunen, V.-P.; Paakkonen, P.; Kehusmaa, P.; Muinonen, K. (2008) Icarus 198, 91-107.]
[Behrend, R. (2011) Observatoire de Geneve web site,]
[Marchis, F.; Descamps, P.; Dalba, P.; Enriquez, J.E.; et al. (2011) EPSC-DPS2011 #653-3.]
[Behrend, R. (2012) Observatoire de Geneve web site,]
[Marchis, F.; Vachier, F.; Durech, J.; Enriquez, J.E.; et al. (2013) Icarus 224, 178-191.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
[Behrend, R. (2018) Observatoire de Geneve web site,]
geometric albedo albedo 0.056   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.685   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=1.99, mean=14.12, max.=20.65) deg.
U-B UB 0.315   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=1.99, mean=14.28, max.=23.05) deg.
Tholen spectral type spec_T CU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

93 Minerva (A867 QA)          Discovered 1867-Aug-24 by Watson, J. C. at Ann Arbor
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A867 QA = 1949 QN2 = A902 DA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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