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249581 (1995 SX87)
Classification: Main-belt Asteroid          SPK-ID: 2249581
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158161516694834 4.9675e-08  
a 2.411973786535894 1.6047e-08 au
q 2.030492354229195 1.2246e-07 au
i 1.389749565748245 8.6732e-06 deg
node 62.54127254316116 0.00023857 deg
peri 49.59442765205353 0.00024141 deg
M 125.7591615562484 3.3943e-05 deg
tp 2458522.536827981020
(2019-Feb-08.03682798)
0.00012781 TDB
period 1368.224309048628
3.75
1.3654e-05
3.738e-08
d
yr
n .2631147521785517 2.6257e-09 deg/d
Q 2.793455218842593 1.8585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      8507 days (23.29 yr)  
   first obs. used      1995-09-26  
   last obs. used      2019-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63688  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:40:45  

Additional Information
 Earth MOID = 1.04741 au 
 Jupiter MOID = 2.30888 au 
 T_jup = 3.501 
[ 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 17.6   n/a MPO418332  

249581 (1995 SX87)          Discovered 1995-Sep-26 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1995 SX87 = 1999 WC20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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