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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0694650910581838 8.2986e-08  
a 2.9375820932804 3.1038e-08 AU
q 2.733522685679787 2.4758e-07 AU
i 2.760233064194574 7.9714e-06 deg
node 136.2367075764443 0.00017505 deg
peri 178.4405747047971 0.00018785 deg
M 202.6779930264555 6.9378e-05 deg
tp 2457804.156427553388
(2017-Feb-19.65642755)
0.00035383 JED
period 1839.007265956577
5.03
2.9146e-05
7.98e-08
d
yr
n .1957577909909685 3.1025e-09 deg/d
Q 3.141641500881013 3.3194e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      7686 days (21.04 yr)  
   first obs. used      1994-01-02  
   last obs. used      2015-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51716  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:27:42  

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 13.0 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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