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JPL Small-Body Database Browser
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39266 (2001 AT2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2039266
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2505429191794345 4.21e-08  
a 3.97679538797788 3.7975e-08 au
q 2.98043746249459 1.8396e-07 au
i 7.038856721867893 4.4768e-06 deg
node 105.1352712012517 4.07e-05 deg
peri 189.7530646303569 4.1796e-05 deg
M 6.0871850967512 1.1301e-05 deg
tp 2458951.520730494557
(2020-Apr-12.02073049)
9.0571e-05 TDB
period 2896.665164883895
7.93
4.1491e-05
1.136e-07
d
yr
n .1242808469422905 1.7802e-09 deg/d
Q 4.973153313461171 4.749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1488  
   data-arc span      9353 days (25.61 yr)  
   first obs. used      1994-02-08  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50154  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:08:55  

Additional Information
 Earth MOID = 1.96471 au 
 Jupiter MOID = .257057 au 
 T_jup = 2.988 
[ 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 12.6   n/a MPO319559  
diameter diameter 15.831 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 3.6098 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46-4, submitted. (Hildas)]
geometric albedo albedo 0.070   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

39266 (2001 AT2)          Discovered 2001-Jan-01 by Spacewatch at Kitt Peak
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 AT2 = 1994 CX16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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