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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08863973181988449 1.0111e-07  
a 5.212097900769306 3.8224e-07 au
q 4.750098940626132 8.0271e-07 au
i 24.06105412414125 7.0934e-06 deg
node 119.9051259264845 1.8244e-05 deg
peri 232.3564290563762 6.6075e-05 deg
M 337.364568651584 5.7252e-05 deg
tp 2458873.777293615623
(2020-Jan-25.27729362)
0.00067301 TDB
period 4346.275720895814
11.90
0.00047812
1.309e-06
d
yr
n .08282953570322504 9.1118e-09 deg/d
Q 5.67409686091248 4.1613e-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 = 3.79211 au 
 Jupiter MOID = .200243 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 12.7   n/a MPO386283  
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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