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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08965608014610042 2.5503e-08  
a 3.159018398539001 1.2092e-08 AU
q 2.875793191816582 8.3892e-08 AU
i 7.965783536420195 3.3244e-06 deg
node 2.648554208865932 2.3831e-05 deg
peri 60.71603518304526 3.0497e-05 deg
M 27.7741667900198 1.8653e-05 deg
tp 2456842.278609008036
(2014-Jul-03.77860901)
0.00010608 JED
period 2050.815824205915
5.61
1.1775e-05
3.224e-08
d
yr
n .1755398977084612 1.0079e-09 deg/d
Q 3.442243605261419 1.3176e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1662  
   data-arc span      51680 days (141.49 yr)  
   first obs. used      1872-07-26  
   last obs. used      2014-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55337  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:33  

Additional Information
 Earth MOID = 1.89856 AU 
 T_jup = 3.184 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.57 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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.]
geometric albedo albedo 0.0395   0.001 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
B-V BV .663 mag .018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=2.84, mean=9.35, max.=17.06) deg.
U-B UB .301 mag .038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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          Discovered 1867-Sep-06 by Watson, J. C. at Ann Arbor
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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