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21077 (1991 RG14)
Classification: Main-belt Asteroid          SPK-ID: 2021077
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .188845008169965 7.7294e-08  
a 2.54984013407264 2.6764e-08 AU
q 2.068315553121588 1.8733e-07 AU
i 13.03187182933451 9.2449e-06 deg
node 341.6032070734969 3.7643e-05 deg
peri 37.91835791695969 4.991e-05 deg
M 237.4559739945739 3.6728e-05 deg
tp 2457506.741214399450
(2016-Apr-28.24121440)
0.00015625 JED
period 1487.194791329382
4.07
2.3415e-05
6.411e-08
d
yr
n .2420664744785726 3.8112e-09 deg/d
Q 3.031364715023693 3.1818e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      8259 days (22.61 yr)  
   first obs. used      1991-09-13  
   last obs. used      2014-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5533  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:35:30  

Additional Information
 Earth MOID = 1.08372 AU 
 T_jup = 3.380 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6 mag n/a MPO302194  

21077 (1991 RG14)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RG14 = 1999 RU129 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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