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129636 (1998 HF89)
Classification: Main-belt Asteroid          SPK-ID: 2129636
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108027363459005 4.2816e-08  
a 2.531034718393393 1.3596e-08 au
q 2.25058914580893 1.1239e-07 au
i 5.834301729506986 6.1154e-06 deg
node 42.7481474397467 3.795e-05 deg
peri 64.40392803940983 4.7486e-05 deg
M 270.6705234377139 2.97e-05 deg
tp 2459365.453782321865
(2021-May-30.95378232)
0.00012269 TDB
period 1470.772769437005
4.03
1.1851e-05
3.245e-08
d
yr
n .2447692855625848 1.9723e-09 deg/d
Q 2.811480290977857 1.5103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      8190 days (22.42 yr)  
   first obs. used      1998-04-20  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52508  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:29:23  

Additional Information
 Earth MOID = 1.27466 au 
 Jupiter MOID = 2.30966 au 
 T_jup = 3.435 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO449742  
diameter diameter 2.523 km 0.349 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129636 (1998 HF89)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1998 HF89 = 2000 WS14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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