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215289 (2001 RF85)
Classification: Main-belt Asteroid          SPK-ID: 2215289
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797095763824838 5.367e-08  
a 2.727142697045594 1.6591e-08 au
q 2.237049038224946 1.4994e-07 au
i 2.2571660160541 6.1292e-06 deg
node 206.9817645792149 0.00013608 deg
peri 178.0765045623896 0.00013736 deg
M 35.76362767282532 1.6073e-05 deg
tp 2458837.082227930630
(2019-Dec-19.58222793)
7.3538e-05 TDB
period 1644.978481578223
4.50
1.5011e-05
4.11e-08
d
yr
n .2188478475746438 1.997e-09 deg/d
Q 3.217236355866242 1.9572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      7520 days (20.59 yr)  
   first obs. used      1999-03-21  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57856  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:58:09  

Additional Information
 Earth MOID = 1.241 au 
 Jupiter MOID = 2.23579 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457123.5 (2015-Apr-11.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1805649069980582 5.436e-08  
q 2.234407387981615 1.5201e-07 au
tp 2457185.096557206894
(2015-Jun-11.59655721)
7.4421e-05 TDB
node 207.0402188045925 0.00013637 deg
peri 176.8147748874687 0.0001376 deg
i 2.251271926371877 6.1402e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      7520 days (20.59 yr)  
   first obs. used      1999-03-21  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57856  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:58:09  

Additional Information
 Jupiter MOID = 2.23579 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.954978709069022E-15 -8.23259808448772E-15 -9.525714141306994E-13 -2.411520705039759E-14 -2.277340723993171E-13 -2.336718226084527E-15
q -8.23259808448772E-15 2.310582730888347E-14 2.399115653644204E-12 6.758531255890846E-14 5.701516990402321E-13 6.739598919288681E-15
tp -9.525714141306994E-13 2.399115653644204E-12 5.538447255854812E-9 7.269746879109204E-11 1.394133035897277E-9 -1.081973096819597E-12
node -2.411520705039759E-14 6.758531255890846E-14 7.269746879109204E-11 1.859660412193907E-8 -1.856325489061887E-8 -2.080432332947084E-10
peri -2.277340723993171E-13 5.701516990402321E-13 1.394133035897277E-9 -1.856325489061887E-8 1.893425494848214E-8 2.075841162987822E-10
i -2.336718226084527E-15 6.739598919288681E-15 -1.081973096819597E-12 -2.080432332947084E-10 2.075841162987822E-10 3.770180921668218E-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 16.6   n/a MPO450015  
diameter diameter 2.313 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215289 (2001 RF85)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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