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JPL Small-Body Database Browser
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13950 (1990 RP9)
Classification: Main-belt Asteroid          SPK-ID: 2013950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1138142082397902 3.5518e-08  
a 2.360015939266797 7.2363e-09 au
q 2.091412593705862 8.2892e-08 au
i 5.609276254463864 3.5285e-06 deg
node 247.235982094547 4.3032e-05 deg
peri 44.93538906176076 4.7131e-05 deg
M 110.4270961319464 1.8601e-05 deg
tp 2458594.296199752754
(2019-Apr-20.79619975)
6.8571e-05 TDB
period 1324.252590272574
3.63
6.0906e-06
1.668e-08
d
yr
n .2718514599438318 1.2503e-09 deg/d
Q 2.628619284827732 8.0599e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1937  
   data-arc span      17791 days (48.71 yr)  
   first obs. used      1971-05-13  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:48:15  

Additional Information
 Earth MOID = 1.07959 au 
 Jupiter MOID = 2.5143 au 
 T_jup = 3.537 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO502274  
diameter diameter 3.463 km 0.437 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.535   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13950 (1990 RP9)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RP9 = 1978 EM7 = 1994 UX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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