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312459 (2008 QG44)
Classification: Jupiter Trojan          SPK-ID: 2312459
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0889024638244006 1.0131e-07  
a 5.213327121337988 3.8163e-07 au
q 4.749849495528471 8.0353e-07 au
i 24.06023434147858 7.0932e-06 deg
node 119.9027241055718 1.8243e-05 deg
peri 232.6118864597718 6.5788e-05 deg
M 10.28281185068446 5.4837e-05 deg
tp 2458876.311814909219
(2020-Jan-27.81181491)
0.00067024 TDB
period 4347.813349293668
11.90
0.00047741
1.307e-06
d
yr
n .08280024257676205 9.0918e-09 deg/d
Q 5.676804747147505 4.1556e-07 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      6401 days (17.52 yr)  
   first obs. used      2002-03-19  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60399  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:11:02  

Additional Information
 Earth MOID = 3.79328 au 
 Jupiter MOID = .197671 au 
 T_jup = 2.819 
[ 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 12.6   n/a MPO494656  
diameter diameter 15.662 km 0.711 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.079   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312459 (2008 QG44)          Discovered 2008-Aug-25 by Siding Spring Survey at Siding Spring
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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