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59171 (1999 AP2)
Classification: Main-belt Asteroid          SPK-ID: 2059171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02851576607229452 3.5777e-08  
a 2.27533689116278 7.8409e-09 au
q 2.21045391663872 8.1896e-08 au
i 5.599367821209242 4.2736e-06 deg
node 18.50111431838334 3.6027e-05 deg
peri 300.4438928446941 7.7404e-05 deg
M 356.5185044731138 6.8938e-05 deg
tp 2459408.623564576439
(2021-Jul-13.12356458)
0.00024007 TDB
period 1253.623109325548
3.43
6.48e-06
1.774e-08
d
yr
n .2871676481727277 1.4844e-09 deg/d
Q 2.340219865686839 8.0645e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      9275 days (25.39 yr)  
   first obs. used      1996-02-14  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48404  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:26:50  

Additional Information
 Earth MOID = 1.20344 au 
 Jupiter MOID = 2.71221 au 
 T_jup = 3.603 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.16   n/a E2021B10  
diameter diameter 3.558 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.097   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59171 (1999 AP2)          Discovered 1999-Jan-09 by Kobayashi, T. at Oizumi
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AP2 = 2001 QS104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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