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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0942734878327464 2.9528e-08  
a 3.157818067654637 1.1647e-08 au
q 2.860119544475571 9.7168e-08 au
i 7.969381177306825 3.4587e-06 deg
node 2.565352398435638 2.5752e-05 deg
peri 60.3431734415087 3.3272e-05 deg
M 19.26394569238667 2.0917e-05 deg
tp 2458890.821417428064
(2020-Feb-11.32141743)
0.00011893 TDB
period 2049.647063815258
5.61
1.1339e-05
3.104e-08
d
yr
n .1756399949803495 9.7169e-10 deg/d
Q 3.455516590833703 1.2745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4069  
   data-arc span      54166 days (148.30 yr)  
   first obs. used      1872-07-26  
   last obs. used      2020-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37057  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:00  

Additional Information
 Earth MOID = 1.88319 au 
 Jupiter MOID = 1.87311 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 7.6   n/a MPO502153 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1962-Sep-14 11:23 < 00:01 Jupiter 1.96382755273546 1.96382716852786 1.96382793694306 4.3776322407622 4.27797147099523 2437921.974319164 0.844149382484545 49.4900269480552 15.6226389908733 82.1577442095447 3843936.07124648 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51
1973-Apr-30 20:12 < 00:01 Jupiter 1.94837401510431 1.94837365441322 1.94837437579539 3.37291001325924 3.24145891868362 2441803.341833127 0.705848994762553 31.6458154971519 13.3371820437546 79.7880622832566 3458482.42888302 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51
2069-Apr-06 13:48 < 00:01 Jupiter 1.93659359379917 1.93659325370365 1.93659393389469 4.16531269857633 4.05894996569389 2476843.074829001 0.952054211560055 48.3200193383259 15.1026693373481 88.3326028206822 4134853.18866098 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51
2079-Nov-19 18:03 00:01 Jupiter 1.93939401398553 1.93939363302823 1.93939439494284 3.18482463548997 3.04460441157654 2480722.252265602 1.18040646153029 32.5620244195179 15.0791397473911 72.5553714368692 3401477.77509423 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51
2175-Oct-30 03:38 00:03 Jupiter 1.91843363750621 1.91843328823911 1.9184339867733 3.97263554923807 3.85989607293759 2515764.651359395 2.74010477675118 62.8814118807009 15.2510594166112 89.6407040062688 2843446.49825675 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51
2186-Jun-09 13:07 00:03 Jupiter 1.93884525315978 1.93884475385372 1.93884575246606 3.03151002695169 2.88380198331896 2519640.046453252 3.04832175171069 46.9066347468042 18.6097547741875 51.7881211847264 2819992.93284318 T 103 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:10 2020-Dec-18 01:51

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