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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1499757112313234 5.6131e-08  
a 5.198679743214222 9.5724e-08 au
q 4.419004051261795 3.3563e-07 au
i 17.47586251748311 5.636e-06 deg
node 71.14137268508804 1.8606e-05 deg
peri 356.3349739163638 2.7239e-05 deg
M 286.1851547047924 2.3835e-05 deg
tp 2459888.226605990273
(2022-Nov-04.72660599)
0.00030052 TDB
period 4329.502783327607
11.85
0.00011958
3.274e-07
d
yr
n .08315042581478792 2.2966e-09 deg/d
Q 5.978355435166648 1.1008e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1641  
   data-arc span      25103 days (68.73 yr)  
   first obs. used      1951-11-08  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:26:12  

Additional Information
 Earth MOID = 3.43336 au 
 Jupiter MOID = .630336 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-August); 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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