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78568 (2002 RW181)
Classification: Main-belt Asteroid          SPK-ID: 2078568
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752653927496709 6.1274e-08  
a 3.081716926922333 2.0956e-08 au
q 2.541598599381981 1.946e-07 au
i 5.369510336209576 5.0778e-06 deg
node 118.9536403810833 6.1225e-05 deg
peri 226.2570235567975 6.2343e-05 deg
M 117.2025978451345 1.1192e-05 deg
tp 2458357.187070697423
(2018-Aug-26.68707070)
6.2054e-05 TDB
period 1976.002740612816
5.41
2.0156e-05
5.518e-08
d
yr
n .1821859821350012 1.8584e-09 deg/d
Q 3.621835254462685 2.4629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      8644 days (23.67 yr)  
   first obs. used      1996-07-22  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:22  

Additional Information
 Earth MOID = 1.53773 au 
 Jupiter MOID = 1.79754 au 
 T_jup = 3.197 
[ 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 14.7   n/a MPO272996  
diameter diameter 7.010 km 0.481 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78568 (2002 RW181)          Discovered 2002-Sep-13 by Tucker, R. A. at Goodricke-Pigott
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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