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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08506585539909398 3.5375e-08  
a 2.286950653309854 4.1323e-09 au
q 2.092409239730534 8.0533e-08 au
i 1.765798922504246 3.7757e-06 deg
node 151.3428953960762 0.00011849 deg
peri 186.9967624369545 0.00012042 deg
M 135.3477980894931 2.1755e-05 deg
tp 2458725.567038733135
(2019-Aug-30.06703873)
7.6152e-05 TDB
period 1263.233450927814
3.46
3.4238e-06
9.374e-09
d
yr
n .2849829536540445 7.724e-10 deg/d
Q 2.481492066889173 4.4838e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3494  
   data-arc span      47249 days (129.36 yr)  
   first obs. used      1891-09-11  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:45:29  

Additional Information
 Earth MOID = 1.08119 au 
 Jupiter MOID = 2.78152 au 
 T_jup = 3.596 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456055.5 (2012-May-08.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08474346480513309 3.5272e-08  
q 2.092789362711843 8.0234e-08 au
tp 2456198.376187242415
(2012-Sep-27.87618724)
7.6026e-05 TDB
node 151.4297093254914 0.00011868 deg
peri 186.6021549176311 0.00012063 deg
i 1.764117762254357 3.7734e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3494  
   data-arc span      47249 days (129.36 yr)  
   first obs. used      1891-09-11  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:45:29  

Additional Information
 Jupiter MOID = 2.78152 au 
 T_jup = 3.596 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.244131712165497E-15 -2.826938636985674E-15 4.902487089383716E-15 6.921980968137976E-16 -1.043056549349586E-14 2.650528940559224E-17
q -2.826938636985674E-15 6.437562166617403E-15 6.645039723577884E-15 -2.013437097118184E-15 2.74222510185223E-14 -4.921524057495841E-17
tp 4.902487089383716E-15 6.645039723577884E-15 5.779991963752705E-9 -8.686283729807584E-12 1.657642635870273E-9 -1.942138752293677E-13
node 6.921980968137976E-16 -2.013437097118184E-15 -8.686283729807584E-12 1.408431810934376E-8 -1.407911621079547E-8 -7.952778928892683E-12
peri -1.043056549349586E-14 2.74222510185223E-14 1.657642635870273E-9 -1.407911621079547E-8 1.455221166069692E-8 7.890867515501022E-12
i 2.650528940559224E-17 -4.921524057495841E-17 -1.942138752293677E-13 -7.952778928892683E-12 7.890867515501022E-12 1.423874205260622E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.79   n/a E2021B10 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. 2020-October); 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]
[Behrend, R. (2013) 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.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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