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85128 (1979 HA)
Classification: Main-belt Asteroid          SPK-ID: 2085128
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1847495515282289 5.1318e-08  
a 2.425871225627075 1.2856e-08 au
q 1.977692604627238 1.3027e-07 au
i 24.7770854724774 4.3518e-06 deg
node 48.93937328050082 9.491e-06 deg
peri 156.5283201260688 1.5128e-05 deg
M 322.1524562391155 1.2706e-05 deg
tp 2459145.589251636461
(2020-Oct-23.08925164)
4.9175e-05 TDB
period 1380.066588181293
3.78
1.097e-05
3.003e-08
d
yr
n .2608569782668403 2.0736e-09 deg/d
Q 2.874049846626912 1.5231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      15034 days (41.16 yr)  
   first obs. used      1979-04-21  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42863  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:16:16  

Additional Information
 Earth MOID = .984051 au 
 Jupiter MOID = 2.12966 au 
 T_jup = 3.363 
[ 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 13.7   n/a MPO502663  
diameter diameter 5.299 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85128 (1979 HA)          Discovered 1979-Apr-21 by Zelinsky, D. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1979 HA = 2000 XW42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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