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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310760127054855 4.5802e-08  
a 2.521767139990551 1.1096e-08 au
q 2.191223958308874 1.1751e-07 au
i 3.727537709294923 4.4979e-06 deg
node 131.8753030790532 6.3575e-05 deg
peri 223.9198423236549 6.4985e-05 deg
M 286.6086708577513 1.4545e-05 deg
tp 2459498.693485300252
(2021-Oct-11.19348530)
5.982e-05 TDB
period 1462.702147007355
4.00
9.6543e-06
2.643e-08
d
yr
n .2461198274279895 1.6245e-09 deg/d
Q 2.852310321672229 1.2551e-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 = 1.1865 au 
 Jupiter MOID = 2.57636 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 16.32   n/a E2021B55  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2115-Dec-27 19:07 < 00:01 Juno 0.0211151969481703 0.0211124510569727 0.0211179564220775 5.12914165634322 5.12914154401053 2493908.296508101 0.72216619442484 907.171130279114 46.3580033639389 81.8083254084396 67403.2433446118 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:59:56 2020-Nov-12 19:59

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