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85822 (1998 XC17)
Classification: Jupiter Trojan          SPK-ID: 2085822
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276245347827441 9.2168e-08  
a 5.178515304611317 2.2149e-07 au
q 4.517609697994978 5.9372e-07 au
i 11.31624429530138 7.509e-06 deg
node 86.90963916425585 3.8212e-05 deg
peri 325.2334780165829 5.1426e-05 deg
M 309.584114138111 4.516e-05 deg
tp 2459603.297197956270
(2022-Jan-23.79719796)
0.00056769 TDB
period 4304.337562543945
11.78
0.00027615
7.561e-07
d
yr
n .08363656306435995 5.3659e-09 deg/d
Q 5.839420911227656 2.4976e-07 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      7568 days (20.72 yr)  
   first obs. used      1998-12-08  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:54:09  

Additional Information
 Earth MOID = 3.53673 au 
 Jupiter MOID = .417909 au 
 T_jup = 2.945 
[ 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 12.5   n/a MPO453289  
diameter diameter 12.474 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.164   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

85822 (1998 XC17)          Discovered 1998-Dec-08 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 XC17 = 2000 AA37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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