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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .006847217066880084 4.8556e-08  
a 5.139435090102419 9.7624e-08 au
q 5.104244262439347 2.8399e-07 au
i 6.690046705056025 5.2171e-06 deg
node 112.767505516571 4.9044e-05 deg
peri 1.180588101371973 0.00048673 deg
M 222.8306841468417 0.0004872 deg
tp 2460222.033691721440
(2023-Oct-04.53369172)
0.0057791 TDB
period 4255.704895726341
11.65
0.00012126
3.32e-07
d
yr
n .08459233166320315 2.4103e-09 deg/d
Q 5.17462591776549 9.8292e-08 au
  Orbit Determination Parameters
   # obs. used (total)      897  
   data-arc span      14417 days (39.47 yr)  
   first obs. used      1980-03-21  
   last obs. used      2019-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:31:30  

Additional Information
 Earth MOID = 4.12091 au 
 Jupiter MOID = .0297426 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 11.8   n/a MPO337438  
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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