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183071 (2002 RO21)
Classification: Main-belt Asteroid          SPK-ID: 2183071
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2087604697436049 7.862e-08  
a 2.667234458236383 2.1632e-08 au
q 2.110421339818626 2.1254e-07 au
i 3.3820912332721 6.3364e-06 deg
node 116.4506614578445 0.00013267 deg
peri 213.5324691932649 0.00013345 deg
M 307.8963211338266 1.3956e-05 deg
tp 2458830.779938276380
(2019-Dec-13.27993828)
6.2318e-05 TDB
period 1591.073405630812
4.36
1.9356e-05
5.299e-08
d
yr
n .2262623451098857 2.7526e-09 deg/d
Q 3.22404757665414 2.6148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      9952 days (27.25 yr)  
   first obs. used      1991-01-12  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58925  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:29:16  

Additional Information
 Earth MOID = 1.09949 au 
 Jupiter MOID = 2.13333 au 
 T_jup = 3.349 
[ 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 16.1   n/a MPO436904  
diameter diameter 4.015 km 0.691 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.039   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

183071 (2002 RO21)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2002 RO21 = 1993 NW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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