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5283 Pyrrhus (1989 BW)
Classification: Jupiter Trojan          SPK-ID: 2005283
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492154666357049 6.2354e-08  
a 5.201140281163175 1.0166e-07 au
q 4.425049707071651 3.5415e-07 au
i 17.47711334637912 6.2184e-06 deg
node 71.1539481428602 1.8771e-05 deg
peri 356.146037204565 2.7811e-05 deg
M 253.0351276348701 2.4991e-05 deg
tp 2459887.815369698820
(2022-Nov-04.31536970)
0.00032328 TDB
period 4332.576881030827
11.86
0.00012703
3.478e-07
d
yr
n .08309142800816198 2.4361e-09 deg/d
Q 5.9772308552547 1.1683e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1448  
   data-arc span      24786 days (67.86 yr)  
   first obs. used      1951-11-08  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49101  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:49:45  

Additional Information
 Earth MOID = 3.43915 au 
 Jupiter MOID = .626444 au 
 T_jup = 2.886 
[ 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 9.7   n/a MPO416769  
diameter diameter 48.356 km 0.423 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 7.323 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.100   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5283 Pyrrhus (1989 BW)          Discovered 1989-Jan-31 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 BW = 1978 GF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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