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101903 (1999 RR)
Classification: Main-belt Asteroid          SPK-ID: 2101903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670834175433524 4.6539e-08  
a 3.149143218860914 2.219e-08 au
q 2.622973607520159 1.4645e-07 au
i 6.983026579789668 4.4913e-06 deg
node 85.3830973835931 4.0783e-05 deg
peri 332.7158366158504 4.2698e-05 deg
M 245.252018917575 1.5353e-05 deg
tp 2459851.123278250903
(2022-Sep-28.62327825)
9.1124e-05 TDB
period 2041.206982126149
5.59
2.1575e-05
5.907e-08
d
yr
n .1763662397553722 1.8641e-09 deg/d
Q 3.675312830201669 2.5898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-08-12  
   last obs. used      2019-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53188  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:17  

Additional Information
 Earth MOID = 1.6372 au 
 Jupiter MOID = 1.67152 au 
 T_jup = 3.175 
[ 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 14.22   n/a MPCxxxxx  
diameter diameter 7.690 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101903 (1999 RR)          Discovered 1999-Sep-03 by Sarounova, L. at Ondrejov
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RR = 2000 VQ37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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