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173175 (1997 HL2)
Classification: Main-belt Asteroid          SPK-ID: 2173175
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 .1389778754118458 5.0692e-08  
a 2.454415195243212 1.1633e-08 au
q 2.113305786029759 1.2168e-07 au
i 3.228035433321944 4.1819e-06 deg
node 136.5537444636603 8.3888e-05 deg
peri 82.53182046563091 8.514e-05 deg
M 7.434160964852387 1.3634e-05 deg
tp 2458971.496531840485
(2020-May-01.99653184)
5.3194e-05 TDB
period 1404.495892245275
3.85
9.9855e-06
2.734e-08
d
yr
n .2563197243848764 1.8224e-09 deg/d
Q 2.795524604456664 1.325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      9867 days (27.01 yr)  
   first obs. used      1993-04-22  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:25:01  

Additional Information
 Earth MOID = 1.10855 au 
 Jupiter MOID = 2.17814 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 16.8   n/a MPO422661  

173175 (1997 HL2)          Discovered 1997-Apr-29 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1997 HL2 = 2004 BB67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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