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249251 (2008 RO120)
Classification: Main-belt Asteroid          SPK-ID: 2249251
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082343215501891 2.8629e-07  
a 2.693183131103668 3.0544e-08 au
q 2.401688282098248 7.5442e-07 au
i 2.166738154077747 6.97e-06 deg
node 307.6532484489524 0.00031761 deg
peri 50.79594445466216 0.00032048 deg
M 155.2656232934355 4.9827e-05 deg
tp 2457904.242212774623
(2017-May-30.74221277)
0.0002172 TDB
period 1614.348354029589
4.42
2.7463e-05
7.519e-08
d
yr
n .2230001963959024 3.7937e-09 deg/d
Q 2.984677980109087 3.385e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      7104 days (19.45 yr)  
   first obs. used      1999-09-15  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60121  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:36:32  

Additional Information
 Earth MOID = 1.39753 au 
 Jupiter MOID = 2.44021 au 
 T_jup = 3.361 
[ 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 MPO433633  
diameter diameter 3.297 km 0.710 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249251 (2008 RO120)          Discovered 2008-Sep-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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