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13938 (1989 RP1)
Classification: Main-belt Asteroid          SPK-ID: 2013938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2315522979115429 1.4269e-08  
a 2.651828543425133 9.1881e-09 au
q 2.037791550527624 3.7912e-08 au
i 12.96155923243976 8.1476e-07 deg
node 162.501581562744 2.4866e-06 deg
peri 155.2866955501601 5.4972e-06 deg
M 109.6106352602916 4.1533e-06 deg
tp 2458720.250653886791
(2019-Aug-24.75065389)
1.695e-05 TDB
period 1577.308298507668
4.32
8.1976e-06
2.244e-08
d
yr
n .2282369276447764 1.1862e-09 deg/d
Q 3.265865536322643 1.1316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2059  
   data-arc span      16230 days (44.44 yr)  
   first obs. used      1976-09-25  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:13:08  

Additional Information
 Earth MOID = 1.03077 au 
 Jupiter MOID = 2.12604 au 
 T_jup = 3.316 
[ 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 13.68   n/a MPCxxxxx  
diameter diameter 7.872 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.132   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13938 (1989 RP1)          Discovered 1989-Sep-05 by Helin, E. F. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 RP1 = 1976 SS6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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