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101551 (1999 AH1)
Classification: Main-belt Asteroid          SPK-ID: 2101551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310692248873909 4.5771e-08  
a 2.521052592532077 1.1168e-08 au
q 2.190620183328551 1.1729e-07 au
i 3.727396680069047 4.4978e-06 deg
node 131.8789769575971 6.3587e-05 deg
peri 224.0471897911762 6.5003e-05 deg
M 237.2329740614097 1.4448e-05 deg
tp 2459499.097985851683
(2021-Oct-11.59798585)
5.9851e-05 TDB
period 1462.080501945139
4.00
9.7155e-06
2.66e-08
d
yr
n .2462244722647346 1.6362e-09 deg/d
Q 2.851485001735604 1.2632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      8803 days (24.10 yr)  
   first obs. used      1996-04-17  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:54  

Additional Information
 Earth MOID = 1.18766 au 
 Jupiter MOID = 2.57723 au 
 T_jup = 3.441 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO432543  

101551 (1999 AH1)          Discovered 1999-Jan-07 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 AH1 = 1996 HL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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