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12854 (1998 HA13)
Classification: Main-belt Asteroid          SPK-ID: 2012854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2953517690793535 3.6112e-08  
a 2.375599210772057 7.3803e-09 au
q 1.673961781247014 8.4428e-08 au
i 5.234912524002721 3.854e-06 deg
node 236.0381238067187 4.3555e-05 deg
peri 83.57150361416136 4.3971e-05 deg
M 306.890476965997 8.3498e-06 deg
tp 2459197.800454509107
(2020-Dec-14.30045451)
3.1656e-05 TDB
period 1337.390350461317
3.66
6.2323e-06
1.706e-08
d
yr
n .269180946218 1.2544e-09 deg/d
Q 3.0772366402971 9.56e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      10128 days (27.73 yr)  
   first obs. used      1991-07-09  
   last obs. used      2019-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54095  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:19:28  

Additional Information
 Earth MOID = .671395 au 
 Jupiter MOID = 2.28424 au 
 T_jup = 3.476 
[ 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 15.0   n/a MPO378702  
rotation period rot_per 50.6 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Oey, J. (2014) Minor Planet Bull. 41, 276-281.]

12854 (1998 HA13)          Discovered 1998-Apr-29 by JPL/GEODSS NEAT at Haleakala
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 HA13 = 1991 PY31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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