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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04797591934264427 3.8271e-08  
a 2.742425554513176 1.5429e-08 au
q 2.610855167306645 1.0912e-07 au
i 6.057362821770108 4.4483e-06 deg
node 161.298780110827 3.6889e-05 deg
peri 297.2769722106763 5.8415e-05 deg
M 1.3391269290487 4.4333e-05 deg
tp 2458594.329505915477
(2019-Apr-20.82950592)
0.00020428 TDB
period 1658.825479677584
4.54
1.3999e-05
3.833e-08
d
yr
n .2170210214458311 1.8315e-09 deg/d
Q 2.873995941719707 1.6169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      10641 days (29.13 yr)  
   first obs. used      1990-09-14  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51558  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 02:31:58  

Additional Information
 Earth MOID = 1.63459 au 
 Jupiter MOID = 2.19288 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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