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101977 (1999 RA52)
Classification: Main-belt Asteroid          SPK-ID: 2101977
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676816214218433 5.3696e-08  
a 2.167783394551706 8.5621e-09 au
q 1.804285960061929 1.1583e-07 au
i 2.279765136390233 5.1849e-06 deg
node 340.6329961557493 8.8212e-05 deg
peri 340.1874705597016 8.8821e-05 deg
M 247.3630649931814 1.1975e-05 deg
tp 2459565.254432538639
(2021-Dec-16.75443254)
3.9854e-05 TDB
period 1165.795178162127
3.19
6.9068e-06
1.891e-08
d
yr
n .3088021006979452 1.8295e-09 deg/d
Q 2.531280829041484 9.9978e-09 au
  Orbit Determination Parameters
   # obs. used (total)      942  
   data-arc span      7913 days (21.66 yr)  
   first obs. used      1999-06-25  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:43  

Additional Information
 Earth MOID = .789761 au 
 Jupiter MOID = 2.76179 au 
 T_jup = 3.672 
[ 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 15.97   n/a E2021B55  

101977 (1999 RA52)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RA52 = 1999 OM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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