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101552 (1999 AP1)
Classification: Main-belt Asteroid          SPK-ID: 2101552
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577977936035381 5.0105e-08  
a 2.967275196227058 1.9748e-08 au
q 2.499045717247923 1.4812e-07 au
i 10.0556311613628 4.1665e-06 deg
node 70.38122226479392 3.1069e-05 deg
peri 45.46675673141724 3.5153e-05 deg
M 69.95702633151605 1.4593e-05 deg
tp 2458837.702733554207
(2019-Dec-20.20273355)		 7.5765e-05 TDB
period 1866.960658126863
5.11		 1.8638e-05
5.103e-08		 d
yr
n .1928267735224753 1.925e-09 deg/d
Q 3.435504675206194 2.2865e-08 au
   Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      7855 days (21.51 yr)  
   first obs. used      1998-12-10  
   last obs. used      2020-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52164  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:19  

Additional Information
 Earth MOID = 1.52723 au 
 Jupiter MOID = 1.76366 au 
 T_jup = 3.222 
[ 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 15.34   n/a E2021B55  
diameter diameter 2.716 km 0.790 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.199   0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101552 (1999 AP1)          Discovered 1999-Jan-07 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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