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103178 (1999 XL235)
Classification: Main-belt Asteroid          SPK-ID: 2103178
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073952024045463 5.7032e-08  
a 2.16472242744116 8.7453e-09 au
q 1.715769381452339 1.2034e-07 au
i 6.11294306688302 5.8279e-06 deg
node 68.7750131561021 4.7339e-05 deg
peri 276.7669540368302 5.01e-05 deg
M 280.442657650351 1.9849e-05 deg
tp 2459457.586645722973
(2021-Aug-31.08664572)
6.5133e-05 TDB
period 1163.326849877845
3.19
7.0496e-06
1.93e-08
d
yr
n .3094573120510387 1.8753e-09 deg/d
Q 2.613675473429979 1.0559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      367  
   data-arc span      8041 days (22.02 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:14:17  

Additional Information
 Earth MOID = .72042 au 
 Jupiter MOID = 2.81638 au 
 T_jup = 3.658 
[ 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 17.3   n/a MPO469042  

103178 (1999 XL235)          Discovered 1999-Dec-02 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XL235 = 1998 HS8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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