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85817 (1998 XB1)
Classification: Main-belt Asteroid          SPK-ID: 2085817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552498982026811 4.7129e-08  
a 2.435299864502495 1.0742e-08 au
q 2.057219808445479 1.1628e-07 au
i .9403415384423205 6.1519e-06 deg
node 186.1326220470014 0.00027224 deg
peri 256.1460353227067 0.00027341 deg
M 221.6458928815921 2.2261e-05 deg
tp 2459533.978165340194
(2021-Nov-15.47816534)
8.6547e-05 TDB
period 1388.120262726321
3.80
9.1843e-06
2.515e-08
d
yr
n .2593435235164325 1.7159e-09 deg/d
Q 2.81337992055951 1.241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      9931 days (27.19 yr)  
   first obs. used      1992-03-01  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:14  

Additional Information
 Earth MOID = 1.07339 au 
 Jupiter MOID = 2.40548 au 
 T_jup = 3.488 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO162247  

85817 (1998 XB1)          Discovered 1998-Dec-07 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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