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39534 (1990 RK1)
Classification: Main-belt Asteroid          SPK-ID: 2039534
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1887505687881485 5.34e-08  
a 2.687704131863865 1.687e-08 au
q 2.180398448240304 1.4563e-07 au
i 13.37383818673189 6.7635e-06 deg
node 358.0758030298508 1.9899e-05 deg
peri 25.08910875172115 2.4567e-05 deg
M 154.4483836463753 1.7288e-05 deg
tp 2457910.019398119514
(2017-Jun-05.51939812)
7.3887e-05 TDB
period 1609.42452622947
4.41
1.5153e-05
4.149e-08
d
yr
n .2236824368791008 2.106e-09 deg/d
Q 3.195009815487427 2.0054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      10466 days (28.65 yr)  
   first obs. used      1990-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46211  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:09:37  

Additional Information
 Earth MOID = 1.18859 au 
 Jupiter MOID = 2.30198 au 
 T_jup = 3.309 
[ 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 13.6   n/a MPO337578  
diameter diameter 8.288 km 0.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39534 (1990 RK1)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RK1 = 1999 XE230 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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