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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310760251141364 4.2886e-08  
a 2.521767138132282 1.0841e-08 au
q 2.191223925402451 1.0951e-07 au
i 3.727537259152155 4.4273e-06 deg
node 131.8752890474757 5.8615e-05 deg
peri 223.9198575941315 6.0146e-05 deg
M 286.60867073655 1.4539e-05 deg
tp 2459498.693485463095
(2021-Oct-11.19348546)
5.9806e-05 TDB
period 1462.702145390576
4.00
9.432e-06
2.582e-08
d
yr
n .246119827700035 1.5871e-09 deg/d
Q 2.852310350862112 1.2262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      8803 days (24.10 yr)  
   first obs. used      1996-04-17  
   last obs. used      2020-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:19  

Additional Information
 Earth MOID = 1.1865 au 
 Jupiter MOID = 2.57636 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457273.5 (2015-Sep-08.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296645193710062 4.2749e-08  
q 2.196088318950469 1.088e-07 au
tp 2456573.441587600221
(2013-Oct-07.94158760)
5.6227e-05 TDB
node 131.8971768451346 5.8593e-05 deg
peri 224.0492917047701 6.0174e-05 deg
i 3.727233552885489 4.4273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      8803 days (24.10 yr)  
   first obs. used      1996-04-17  
   last obs. used      2020-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:19  

Additional Information
 Jupiter MOID = 2.57636 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.827467939061914E-15 -4.633195157425948E-15 -4.156154930527305E-13 2.861462414984801E-14 -1.411438243556467E-13 8.577033409479749E-16
q -4.633195157425948E-15 1.183738446579444E-14 1.080735743252636E-12 -7.359793173943673E-14 3.738111437877303E-13 -2.053028989214351E-15
tp -4.156154930527305E-13 1.080735743252636E-12 3.161472693992648E-9 -1.388226611366363E-11 7.820644515916132E-10 1.484659454861868E-12
node 2.861462414984801E-14 -7.359793173943673E-14 -1.388226611366363E-11 3.433124211093949E-9 -3.429301806354551E-9 6.500646798171027E-11
peri -1.411438243556467E-13 3.738111437877303E-13 7.820644515916132E-10 -3.429301806354551E-9 3.620963220018705E-9 -6.451381240531581E-11
i 8.577033409479749E-16 -2.053028989214351E-15 1.484659454861868E-12 6.500646798171027E-11 -6.451381240531581E-11 1.960101273928123E-11

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 16.33   n/a MPCxxxxx  

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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