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90857 (1996 HN8)
Classification: Main-belt Asteroid          SPK-ID: 2090857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1713384867156625 3.3591e-08  
a 2.386946958380356 1.1058e-08 au
q 1.977971078660912 7.9497e-08 au
i 2.139907723628258 5.2197e-06 deg
node 199.3438629775092 0.00010416 deg
peri 73.8946515905704 0.00010582 deg
M 257.6557870893216 2.034e-05 deg
tp 2459779.433506965765
(2022-Jul-18.93350697)
7.7278e-05 TDB
period 1346.98444188525
3.69
9.36e-06
2.563e-08
d
yr
n .2672636660124606 1.8572e-09 deg/d
Q 2.795922838099799 1.2952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      14599 days (39.97 yr)  
   first obs. used      1981-03-02  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59115  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:11  

Additional Information
 Earth MOID = .962883 au 
 Jupiter MOID = 2.30792 au 
 T_jup = 3.514 
[ 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 16.26   n/a MPCxxxxx  

90857 (1996 HN8)          Discovered 1996-Apr-17 by Elst, E. W. at La Silla
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1996 HN8 = 1981 ER46 = 2001 WH84 = 2003 FY116 = 2004 PO21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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