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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1889675115566324 8.645e-08  
a 2.549489183117555 2.7413e-08 AU
q 2.067718556443279 2.1008e-07 AU
i 13.03242585742782 1.0706e-05 deg
node 341.6075954982213 4.0243e-05 deg
peri 37.94520015058667 5.4805e-05 deg
M 189.0019691678164 4.0917e-05 deg
tp 2457506.763554551490
(2016-Apr-28.26355455)
0.00017587 JED
period 1486.887763567643
4.07
2.3981e-05
6.566e-08
d
yr
n .2421164588349392 3.9049e-09 deg/d
Q 3.03125980979183 3.2593e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      8241 days (22.56 yr)  
   first obs. used      1991-09-13  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57178  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:16:12  

Additional Information
 Earth MOID = 1.08181 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 14.7 mag n/a MPO263535  

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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