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70402 (1999 RJ242)
Classification: Main-belt Asteroid          SPK-ID: 2070402
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 .04880257021008901 3.4208e-08  
a 2.570472403510291 1.3844e-08 au
q 2.445026743564883 8.6522e-08 au
i 3.094631665298913 4.8264e-06 deg
node 354.5993149358067 6.7338e-05 deg
peri 261.1864079670761 8.644e-05 deg
M 98.1736903556482 5.6809e-05 deg
tp 2458590.002552443068
(2019-Apr-16.50255244)
0.00023615 TDB
period 1505.281920086173
4.12
1.2161e-05
3.33e-08
d
yr
n .2391578582033264 1.9321e-09 deg/d
Q 2.695918063455697 1.452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1998-05-01  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57967  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:54:36  

Additional Information
 Earth MOID = 1.43254 au 
 Jupiter MOID = 2.31725 au 
 T_jup = 3.426 
[ 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 15.6   n/a MPO439538  
diameter diameter 2.260 km 0.841 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70402 (1999 RJ242)          Discovered 1999-Sep-04 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RJ242 = 1999 RX143 = 2000 WJ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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