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5259 Epeigeus (1989 BB1)
Classification: Jupiter Trojan          SPK-ID: 2005259
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07290644670756904 2.3692e-08  
a 5.206334057591699 8.403e-08 au
q 4.826758741080089 9.5037e-08 au
i 15.91846509526403 1.6992e-06 deg
node 67.46906309643393 5.0967e-06 deg
peri 201.11226035 2.0575e-05 deg
M 109.1811850582358 1.9142e-05 deg
tp 2457884.542765821340
(2017-May-11.04276582)
0.00023682 TDB
period 4339.06816501056
11.88
0.00010505
2.876e-07
d
yr
n .08296712250408353 2.0086e-09 deg/d
Q 5.58590937410331 9.0156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2151  
   data-arc span      24091 days (65.96 yr)  
   first obs. used      1955-03-23  
   last obs. used      2021-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:30:48  

Additional Information
 Earth MOID = 3.81435 au 
 Jupiter MOID = .502019 au 
 T_jup = 2.918 
[ 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 10.43   n/a E2021B10  
diameter diameter 44.741 km 1.058 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 18.42 h n/a LCDB (Rev. 2020-October); 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 0.073   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5259 Epeigeus (1989 BB1)          Discovered 1989-Jan-30 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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