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JPL Small-Body Database Browser
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39265 (2001 AH2)
Classification: Main-belt Asteroid          SPK-ID: 2039265
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723175365365657 3.9773e-08  
a 2.447938054253355 1.0568e-08 au
q 2.026115399150303 9.6051e-08 au
i 14.67537127657893 3.2321e-06 deg
node 113.2304082298791 1.6605e-05 deg
peri 269.7159154909494 1.9283e-05 deg
M 74.19785743214716 8.9518e-06 deg
tp 2458712.171265244528
(2019-Aug-16.67126524)
3.4968e-05 TDB
period 1398.939916922696
3.83
9.0586e-06
2.48e-08
d
yr
n .2573377138254132 1.6664e-09 deg/d
Q 2.869760709356407 1.2388e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1484  
   data-arc span      8010 days (21.93 yr)  
   first obs. used      1998-02-26  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:08:54  

Additional Information
 Earth MOID = 1.09118 au 
 Jupiter MOID = 2.70946 au 
 T_jup = 3.433 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457366.5 (2015-Dec-10.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1726620500923035 3.9799e-08  
q 2.02492806415946 9.6047e-08 au
tp 2457310.680095721378
(2015-Oct-15.18009572)
3.6925e-05 TDB
node 113.3691272802595 1.6621e-05 deg
peri 269.0087166719142 1.9286e-05 deg
i 14.67019676533652 3.2279e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1484  
   data-arc span      8010 days (21.93 yr)  
   first obs. used      1998-02-26  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:08:54  

Additional Information
 Jupiter MOID = 2.70946 au 
 T_jup = 3.433 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.583947484747975E-15 -3.807602218850994E-15 4.035948230218306E-13 1.432972199484306E-15 8.78738518639949E-14 -9.815948469000122E-15
q -3.807602218850994E-15 9.225047814078476E-15 -1.098152691905023E-12 -2.301411947983133E-15 -2.442534604416962E-13 2.385770446946786E-14
tp 4.035948230218306E-13 -1.098152691905023E-12 1.363487569029538E-9 -4.05241021642444E-12 3.827288374623704E-10 -4.29496552475464E-12
node 1.432972199484306E-15 -2.301411947983133E-15 -4.05241021642444E-12 2.762525574198243E-10 -2.681353422633E-10 -2.08232684933128E-11
peri 8.78738518639949E-14 -2.442534604416962E-13 3.827288374623704E-10 -2.681353422633E-10 3.719404296293181E-10 1.905114060112928E-11
i -9.815948469000122E-15 2.385770446946786E-14 -4.29496552475464E-12 -2.08232684933128E-11 1.905114060112928E-11 1.041963324712081E-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 14.3   n/a MPO449240  
diameter diameter 3.626 km 0.510 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.281   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39265 (2001 AH2)          Discovered 2001-Jan-03 by Biggs, J. at Perth
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 AH2 = 1998 GA4 = 1999 LA14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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