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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0694650713922587 8.1007e-08  
a 2.937582085660024 2.7018e-08 AU
q 2.73352273635903 2.4418e-07 AU
i 2.760234382244527 7.8825e-06 deg
node 136.2365972600491 0.00016095 deg
peri 178.4406869205569 0.00017426 deg
M 202.6779943003101 6.8456e-05 deg
tp 2457804.156417918943
(2017-Feb-19.65641792)
0.00035001 JED
period 1839.007258800729
5.03
2.5371e-05
6.946e-08
d
yr
n .1957577917526908 2.7007e-09 deg/d
Q 3.141641434961017 2.8894e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1009  
   data-arc span      7818 days (21.40 yr)  
   first obs. used      1994-01-02  
   last obs. used      2015-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49903  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:07:11  

Additional Information
 Earth MOID = 1.72055 AU 
 T_jup = 3.269 
[ 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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