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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06862286585675009 9.3144e-08  
a 2.939941744839301 3.5888e-08 AU
q 2.738194516856534 2.7645e-07 AU
i 2.757718019396243 8.8177e-06 deg
node 136.2384997819564 0.00020344 deg
peri 177.8000299319394 0.00021887 deg
M 164.2762763289325 8.1301e-05 deg
tp 2455960.307377944438
(2012-Feb-02.80737794)
0.00041767 JED
period 1841.22352112708
5.04
3.3714e-05
9.23e-08
d
yr
n .1955221600578027 3.5801e-09 deg/d
Q 3.141688972822068 3.8351e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      7378 days (20.20 yr)  
   first obs. used      1994-01-02  
   last obs. used      2014-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52079  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:57:42  

Additional Information
 Earth MOID = 1.72322 AU 
 T_jup = 3.268 
[ 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 13.0 mag n/a MPO250309  

9977 (1994 AH)          Discovered 1994-Jan-02 by Kobayashi, T. at Oizumi (411)
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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