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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1888450077125431 7.7266e-08  
a 2.549840134030725 2.6762e-08 AU
q 2.068315554253941 1.8726e-07 AU
i 13.03187171266262 9.2324e-06 deg
node 341.603207715278 3.756e-05 deg
peri 37.91835776179344 4.9801e-05 deg
M 237.4559736108772 3.6683e-05 deg
tp 2457506.741215972055
(2016-Apr-28.24121597)
0.00015607 JED
period 1487.194791292711
4.07
2.3413e-05
6.41e-08
d
yr
n .2420664744845414 3.8109e-09 deg/d
Q 3.031364713807509 3.1816e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      479  
   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      .5452  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:48:55  

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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