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39535 (1990 RX7)
Classification: Main-belt Asteroid          SPK-ID: 2039535
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04777641237391585 5.5433e-08  
a 2.743216111866412 2.5662e-08 AU
q 2.612155087675112 1.554e-07 AU
i 6.054147023623786 8.0177e-06 deg
node 161.3206853076715 5.3179e-05 deg
peri 299.3343202821975 0.00011032 deg
M 12.07545818674134 9.1953e-05 deg
tp 2456944.834055935863
(2014-Oct-14.33405594)
0.00042409 JED
period 1659.542814291943
4.54
2.3287e-05
6.376e-08
d
yr
n .2169272144711716 3.0439e-09 deg/d
Q 2.874277136057712 2.6888e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      687  
   data-arc span      8931 days (24.45 yr)  
   first obs. used      1990-09-14  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52251  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 16:01:39  

Additional Information
 Earth MOID = 1.63529 AU 
 T_jup = 3.339 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7 mag n/a MPO324665  

39535 (1990 RX7)          Discovered 1990-Sep-14 by Debehogne, H. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RX7 = 1995 UW74 = 1999 RK77 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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