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85455 (1997 HJ)
Classification: Main-belt Asteroid          SPK-ID: 2085455
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1704748859693123 3.7512e-08  
a 2.338919202808464 9.4862e-09 au
q 1.940192218418256 8.7329e-08 au
i 4.430840280836938 4.4126e-06 deg
node 38.59187809500769 5.1177e-05 deg
peri 169.1628637322435 5.277e-05 deg
M 168.4411811164402 1.4597e-05 deg
tp 2458389.182211395157
(2018-Sep-27.68221140)
5.0909e-05 TDB
period 1306.535625308934
3.58
7.9485e-06
2.176e-08
d
yr
n .2755378368767228 1.6763e-09 deg/d
Q 2.737646187198671 1.1103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      8598 days (23.54 yr)  
   first obs. used      1997-04-11  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:55  

Additional Information
 Earth MOID = .935557 au 
 Jupiter MOID = 2.22253 au 
 T_jup = 3.542 
[ 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 MPO240811  

85455 (1997 HJ)          Discovered 1997-Apr-28 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 HJ = 2004 CV95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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