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94 Aurora (A867 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000094
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09443504913421577 2.8579e-08  
a 3.158198071411508 1.0911e-08 au
q 2.859953481362177 9.3291e-08 au
i 7.969612079371591 3.422e-06 deg
node 2.55777115621285 2.5581e-05 deg
peri 60.32738830935901 3.3126e-05 deg
M 54.39728511392191 2.082e-05 deg
tp 2458890.735105843456
(2020-Feb-11.23510584)
0.00011817 TDB
period 2050.017048880547
5.61
1.0624e-05
2.909e-08
d
yr
n .1756082956464119 9.1008e-10 deg/d
Q 3.45644266146084 1.1942e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4227  
   data-arc span      54289 days (148.64 yr)  
   first obs. used      1872-07-26  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:17:17  

Additional Information
 Earth MOID = 1.88232 au 
 Jupiter MOID = 1.8724 au 
 T_jup = 3.184 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.65   n/a E2021B10 IRAS observations used: 16
diameter diameter 204.89 km 3.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
rotation period rot_per 7.22 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marciniak, A.; Michalowski, T.; Polinska, M.; Bartczak, P.; et al. (2011) Astron. Astrophys. 529, A107.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.0395   0.001 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
B-V BV 0.663   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.84, mean=9.35, max.=17.06) deg.
U-B UB 0.301   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.84, mean=9.35, max.=17.06) deg.
Tholen spectral type spec_T CP   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)

94 Aurora (A867 RA)          Discovered 1867-Sep-06 by Watson, J. C. at Ann Arbor
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A867 RA = A912 TC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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