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187808 (1999 RA214)
Classification: Main-belt Asteroid          SPK-ID: 2187808
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1080878792199368 7.3331e-08  
a 2.14421793524768 1.0018e-08 au
q 1.912453966041406 1.5593e-07 au
i 4.701403413018737 5.8638e-06 deg
node 154.8793341442072 6.7458e-05 deg
peri 208.016285313262 6.9622e-05 deg
M 252.0529811405824 1.8583e-05 deg
tp 2459544.382413132466
(2021-Nov-25.88241313)
6.0222e-05 TDB
period 1146.837309966966
3.14
8.0374e-06
2.201e-08
d
yr
n .3139067737605865 2.1999e-09 deg/d
Q 2.375981904453954 1.1101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      9721 days (26.61 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54733  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:55  

Additional Information
 Earth MOID = .909015 au 
 Jupiter MOID = 3.02982 au 
 T_jup = 3.699 
[ 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 17.23   n/a E2021B55  

187808 (1999 RA214)          Discovered 1999-Sep-13 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

Alternate Designations
 1999 RA214 = 1993 TS32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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