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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04777499550111474 3.1865e-08  
a 2.741486486161435 1.329e-08 au
q 2.610511981618706 8.7185e-08 au
i 6.058407294885814 4.3718e-06 deg
node 161.2953848256575 3.1375e-05 deg
peri 296.9295881454059 5.5174e-05 deg
M 88.51522908022844 4.463e-05 deg
tp 2458592.844704824591
(2019-Apr-19.34470482)
0.0002053 TDB
period 1657.973523743925
4.54
1.2056e-05
3.301e-08
d
yr
n .2171325385142894 1.5789e-09 deg/d
Q 2.872460990704164 1.3925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      10819 days (29.62 yr)  
   first obs. used      1990-09-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49629  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:43:57  

Additional Information
 Earth MOID = 1.63414 au 
 Jupiter MOID = 2.19323 au 
 T_jup = 3.340 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO431946  
diameter diameter 6.460 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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