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JPL Small-Body Database Browser
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85461 (1997 HP12)
Classification: Main-belt Asteroid          SPK-ID: 2085461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1805505297074609 5.5633e-08  
a 2.316719096398789 8.5903e-09 au
q 1.898434236360597 1.3018e-07 au
i 3.589997583999213 5.6069e-06 deg
node 207.2421287702042 6.7698e-05 deg
peri 347.7182598254914 6.862e-05 deg
M 102.2378039403424 1.144e-05 deg
tp 2458234.722062977597
(2018-Apr-26.22206298)
4.0129e-05 TDB
period 1287.978147544158
3.53
7.1636e-06
1.961e-08
d
yr
n .2795078477739913 1.5546e-09 deg/d
Q 2.73500395643698 1.0141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      8234 days (22.54 yr)  
   first obs. used      1997-04-06  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57833  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:11:28  

Additional Information
 Earth MOID = .897795 au 
 Jupiter MOID = 2.22497 au 
 T_jup = 3.556 
[ 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 16.5   n/a MPO436373  

85461 (1997 HP12)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 HP12 = 2002 VL91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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