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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1868546939288113 3.957e-08  
a 2.551108883946854 1.1613e-08 au
q 2.074422214257893 9.7318e-08 au
i 13.02047828671241 4.6056e-06 deg
node 341.4305126960155 2.6647e-05 deg
peri 38.31479099919109 3.2929e-05 deg
M 49.42559435500926 1.9432e-05 deg
tp 2458996.165678846437
(2020-May-26.66567885)
8.0069e-05 TDB
period 1488.30492734029
4.07
1.0162e-05
2.782e-08
d
yr
n .2418859155719833 1.6517e-09 deg/d
Q 3.027795553635815 1.3783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1178  
   data-arc span      10771 days (29.49 yr)  
   first obs. used      1991-09-13  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47957  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:38:31  

Additional Information
 Earth MOID = 1.08868 au 
 Jupiter MOID = 2.49738 au 
 T_jup = 3.380 
[ 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 14.74   n/a E2021B10  
diameter diameter 4.008 km 1.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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