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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794920673225526 5.3709e-08  
a 2.726636197731499 1.6644e-08 au
q 2.237226629764168 1.4994e-07 au
i 2.257327426989468 6.1297e-06 deg
node 206.9834442950253 0.00013607 deg
peri 178.0365402892648 0.00013735 deg
M 308.2353246032776 1.6156e-05 deg
tp 2458836.966822166012
(2019-Dec-19.46682217)
7.3611e-05 TDB
period 1644.520231747737
4.50
1.5057e-05
4.122e-08
d
yr
n .2189088300953312 2.0044e-09 deg/d
Q 3.21604576569883 1.9631e-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 = 1.24044 au 
 Jupiter MOID = 2.23446 au 
 T_jup = 3.332 
[ show covariance matrix ]

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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