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21271 (1996 RF33)
Classification: Jupiter Trojan          SPK-ID: 2021271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00731111848259164 4.2003e-08  
a 5.145397914338154 8.798e-08 au
q 5.107779300546347 2.767e-07 au
i 6.689673476422842 3.8929e-06 deg
node 112.7654425699946 4.7825e-05 deg
peri 351.5998035099646 0.00041398 deg
M 299.7678343936778 0.00041305 deg
tp 2460109.768185945152
(2023-Jun-14.26818595)
0.0048961 TDB
period 4263.113310893519
11.67
0.00010934
2.994e-07
d
yr
n .0844453275684916 2.1659e-09 deg/d
Q 5.18301652812996 8.8623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      14937 days (40.90 yr)  
   first obs. used      1980-03-21  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:32:19  

Additional Information
 Earth MOID = 4.12499 au 
 Jupiter MOID = .0371518 au 
 T_jup = 2.987 
[ 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 11.87   n/a E2021B10  
diameter diameter 21.115 km 0.817 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.091   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

21271 (1996 RF33)          Discovered 1996-Sep-15 by Uppsala-DLR Trojan Survey at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 RF33 = 1997 TC28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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