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317 Roxane (A891 RD)
Classification: Main-belt Asteroid          SPK-ID: 2000317
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08503195987508741 3.5966e-08  
a 2.286630250857256 4.221e-09 au
q 2.0921935991172 8.2024e-08 au
i 1.76572271188135 3.8856e-06 deg
node 151.3479524037946 0.00012422 deg
peri 186.8883054924027 0.00012626 deg
M 78.45916042804333 2.25e-05 deg
tp 2458725.246088238165
(2019-Aug-29.74608824)
7.8878e-05 TDB
period 1262.967991164521
3.46
3.497e-06
9.574e-09
d
yr
n .2850428534361046 7.8926e-10 deg/d
Q 2.481066902597311 4.5799e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3166  
   data-arc span      46896 days (128.39 yr)  
   first obs. used      1891-09-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45314  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:24:18  

Additional Information
 Earth MOID = 1.08284 au 
 Jupiter MOID = 2.78245 au 
 T_jup = 3.596 
[ 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 9.8   n/a MPO502155 IRAS observations used: 2
diameter diameter 18.648 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.169 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I.; Rickman, H. (1982) in Sun and Planetary System, W. Fricke, G. Teleki, eds. pp. 289-290.]
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.926   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.694   0.007 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.97, mean=8.62, max.=22.71) deg.
U-B UB 0.238   0.004 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.97, mean=9.77, max.=27.32) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xe   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)

317 Roxane (A891 RD)          Discovered 1891-Sep-11 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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