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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137031813987786 3.5479e-08  
a 2.360445618915953 6.7727e-09 au
q 2.0920554425264 8.2887e-08 au
i 5.608574726997816 3.3824e-06 deg
node 247.2348230980994 3.8364e-05 deg
peri 45.01829148090379 4.1673e-05 deg
M 164.7008311796527 1.666e-05 deg
tp 2458594.485917910516
(2019-Apr-20.98591791)
6.1027e-05 TDB
period 1324.614259622308
3.63
5.701e-06
1.561e-08
d
yr
n .2717772343041575 1.1697e-09 deg/d
Q 2.628835795305506 7.5428e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2213  
   data-arc span      18191 days (49.80 yr)  
   first obs. used      1971-05-13  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:13:30  

Additional Information
 Earth MOID = 1.07832 au 
 Jupiter MOID = 2.51337 au 
 T_jup = 3.536 
[ 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)  
rotation period rot_per 6.550 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V. (2020) Minor Planet Bull. 47, 75-83.]
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

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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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