Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454765.5 (2008-Oct-26.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08787264753020388 2.9569e-08  
q 2.882069448853701 9.6617e-08 au
tp 2454785.585406926868
(2008-Nov-15.08540693)
0.00012562 TDB
node 2.700084304102223 2.5779e-05 deg
peri 59.81162471307127 3.439e-05 deg
i 7.965336822351598 3.4571e-06 deg
  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
 Jupiter MOID = 1.87311 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.743426769003743E-16 -2.841043206836933E-15 5.347811967987926E-13 3.372577863428585E-16 7.771796617832664E-14 -8.247145955110311E-16
q -2.841043206836933E-15 9.334762932119722E-15 -1.61659529799807E-12 -3.136705826452076E-15 -2.305042161889848E-13 3.265050181573995E-15
tp 5.347811967987926E-13 -1.61659529799807E-12 1.578117529208864E-8 -4.458307557931224E-12 2.875563178263795E-9 -2.247097285327642E-12
node 3.372577863428585E-16 -3.136705826452076E-15 -4.458307557931224E-12 6.6457781669815E-10 -6.591594576301209E-10 -2.401579242906611E-11
peri 7.771796617832664E-14 -2.305042161889848E-13 2.875563178263795E-9 -6.591594576301209E-10 1.182683361271154E-9 2.342781911938587E-11
i -8.247145955110311E-16 3.265050181573995E-15 -2.247097285327642E-12 -2.401579242906611E-11 2.342781911938587E-11 1.195125807093596E-11

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

[ show close-approach data ]
Alternate Designations
 A867 RA = A912 TC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-22 22:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin