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JPL Small-Body Database Browser
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26385 (1999 RN20)
Classification: Mars-crossing Asteroid          SPK-ID: 2026385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2691510779563529 5.0738e-08  
a 2.1514471693682 5.9382e-09 au
q 1.572382844566605 1.0813e-07 au
i 27.08095584054391 5.3422e-06 deg
node 173.386961301883 1.0602e-05 deg
peri 198.99078386851 1.3811e-05 deg
M 191.701850121737 7.7192e-06 deg
tp 2459539.354230686659
(2021-Nov-20.85423069)
2.5253e-05 TDB
period 1152.642041445593
3.16
4.7721e-06
1.307e-08
d
yr
n .3123259321241691 1.2931e-09 deg/d
Q 2.730511494169796 7.5365e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      15366 days (42.07 yr)  
   first obs. used      1977-12-12  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 02:34:11  

Additional Information
 Earth MOID = .580818 au 
 Jupiter MOID = 2.74833 au 
 T_jup = 3.521 
[ 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 15.1   n/a MPO459041  
diameter diameter 1.907 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.471   0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

26385 (1999 RN20)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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