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9977 (1994 AH)
Classification: Main-belt Asteroid          SPK-ID: 2009977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0702060924899925 8.1467e-08  
a 2.934585216307888 2.63e-08 au
q 2.728559455192011 2.4595e-07 au
i 2.760755166540751 7.845e-06 deg
node 136.2425120171611 0.00016079 deg
peri 179.0921921422808 0.00017368 deg
M 280.3995591259638 6.7351e-05 deg
tp 2457806.505098389437
(2017-Feb-22.00509839)
0.00034368 JED
period 1836.1937925883
5.03
2.4684e-05
6.758e-08
d
yr
n .1960577371806403 2.6356e-09 deg/d
Q 3.140610977423764 2.8146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      7858 days (21.51 yr)  
   first obs. used      1994-01-02  
   last obs. used      2015-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50016  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:29:24  

Additional Information
 Earth MOID = 1.7128 au 
 Jupiter MOID = 2.04867 au 
 T_jup = 3.270 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO337342  

9977 (1994 AH)          Discovered 1994-Jan-02 by Kobayashi, T. at Oizumi
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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