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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0850658483333219 1.9097e-08  
a 2.28695065095838 3.8307e-09 au
q 2.092409253738163 4.4587e-08 au
i 1.765797701373072 3.3306e-07 deg
node 151.3429344148034 2.8848e-05 deg
peri 186.9966886276292 2.8935e-05 deg
M 135.3478339723448 1.1727e-05 deg
tp 2458725.566913553360
(2019-Aug-30.06691355)		 4.0974e-05 TDB
period 1263.233448979504
3.46		 3.1739e-06
8.69e-09		 d
yr
n .2849829540935795 7.1602e-10 deg/d
Q 2.481492048178598 4.1565e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3647  
   data-arc span      47301 days (129.50 yr)  
   first obs. used      1891-09-11  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:41:46  

Additional Information
 Earth MOID = 1.08119 au 
 Jupiter MOID = 2.78152 au 
 T_jup = 3.596 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457143.5 (2015-May-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08585949220639146 1.9114e-08  
q 2.089968129085134 4.4646e-08 au
tp 2457462.924094154435
(2016-Mar-15.42409415)		 4.0243e-05 TDB
node 151.3832650626187 2.8851e-05 deg
peri 187.0663363228368 2.8915e-05 deg
i 1.76562486065768 3.3296e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      3647  
   data-arc span      47301 days (129.50 yr)  
   first obs. used      1891-09-11  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:41:46  

Additional Information
 Jupiter MOID = 2.78152 au 
 T_jup = 3.596 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.653388480220361E-16 -8.508706709707511E-16 -8.700596891471322E-14 1.405984102208573E-14 6.37532965154022E-16 6.287158817956403E-17
q -8.508706709707511E-16 1.993302467292294E-15 2.067280328884419E-13 -3.393545519434716E-14 -4.22949868235583E-17 -1.291876326738821E-16
tp -8.700596891471322E-14 2.067280328884419E-13 1.619480543632444E-9 1.984248768410637E-10 2.547369584977028E-10 -1.854869513279998E-12
node 1.405984102208573E-14 -3.393545519434716E-14 1.984248768410637E-10 8.323564207614507E-10 -7.684173775355716E-10 -4.099158413397617E-12
peri 6.37532965154022E-16 -4.22949868235583E-17 2.547369584977028E-10 -7.684173775355716E-10 8.360671284094732E-10 3.514403090508314E-12
i 6.287158817956403E-17 -1.291876326738821E-16 -1.854869513279998E-12 -4.099158413397617E-12 3.514403090508314E-12 1.10865105398692E-13

[ 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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