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101553 (1999 AB4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2101553
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0879992716264107 5.2081e-08  
a 1.909633512365722 6.747e-09 au
q 1.741587154204154 1.0241e-07 au
i 18.69791962123935 5.2844e-06 deg
node 315.7319553214791 1.1605e-05 deg
peri 235.2855176352888 2.8661e-05 deg
M 54.35542424169542 2.6572e-05 deg
tp 2459054.966204052918
(2020-Jul-24.46620405)		 7.1017e-05 TDB
period 963.8811079458007
2.64		 5.1083e-06
1.399e-08		 d
yr
n .3734900466793285 1.9794e-09 deg/d
Q 2.07767987052729 7.3408e-09 au
   Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      7777 days (21.29 yr)  
   first obs. used      1999-01-10  
   last obs. used      2020-04-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:20  

Additional Information
 Earth MOID = .790597 au 
 Jupiter MOID = 2.97863 au 
 T_jup = 3.868 
[ 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 16.36   n/a E2021B55  

101553 (1999 AB4)          Discovered 1999-Jan-10 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 AB4 = 2000 SX232 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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