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173141 (1995 SQ44)
Classification: Main-belt Asteroid          SPK-ID: 2173141
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902176408817162 4.957e-08  
a 2.438939309558231 8.9378e-09 au
q 1.975010027840383 1.1986e-07 au
i .3979436513405073 3.763e-06 deg
node 300.6186364705296 0.00066929 deg
peri 61.59985961989411 0.00066935 deg
M 178.8147029005085 8.9447e-06 deg
tp 2458309.464049402900
(2018-Jul-09.96404940)
3.3184e-05 TDB
period 1391.233149062535
3.81
7.6476e-06
2.094e-08
d
yr
n .2587632419789461 1.4224e-09 deg/d
Q 2.90286859127608 1.0638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      10454 days (28.62 yr)  
   first obs. used      1991-09-05  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55458  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:24:32  

Additional Information
 Earth MOID = .972355 au 
 Jupiter MOID = 2.55387 au 
 T_jup = 3.478 
[ 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 16.4   n/a MPO412969  

173141 (1995 SQ44)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1995 SQ44 = 1999 XJ46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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