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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04777641389653341 5.5673e-08  
a 2.743216109437954 2.708e-08 AU
q 2.612155081185808 1.57e-07 AU
i 6.054145125658792 8.5353e-06 deg
node 161.3206713153538 5.7642e-05 deg
peri 299.3343261227348 0.00011627 deg
M 12.07546706368112 9.7232e-05 deg
tp 2456944.834015088499
(2014-Oct-14.33401509)
0.00044833 JED
period 1659.542812088254
4.54
2.4574e-05
6.728e-08
d
yr
n .2169272147592269 3.2122e-09 deg/d
Q 2.8742771376901 2.8374e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      8904 days (24.38 yr)  
   first obs. used      1990-09-14  
   last obs. used      2015-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53694  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 14:43:44  

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 (809)
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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