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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578968143598234 5.1194e-08  
a 2.967961394102346 1.992e-08 au
q 2.499329744830645 1.5102e-07 au
i 10.05533163596887 4.2502e-06 deg
node 70.3859020067251 3.1711e-05 deg
peri 45.5316916142953 3.5743e-05 deg
M 31.33000236472209 1.4621e-05 deg
tp 2458837.966186565672
(2019-Dec-20.46618657)		 7.5909e-05 TDB
period 1867.608312160342
5.11		 1.8802e-05
5.148e-08		 d
yr
n .1927599045559894 1.9406e-09 deg/d
Q 3.436593043374046 2.3066e-08 au
   Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      7855 days (21.51 yr)  
   first obs. used      1998-12-10  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:54  

Additional Information
 Earth MOID = 1.52766 au 
 Jupiter MOID = 1.76274 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 15.2   n/a MPO417512  
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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