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JPL Small-Body Database Browser
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32608 Hallas (2001 QA231)
Classification: Main-belt Asteroid          SPK-ID: 2032608
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128727399789773 3.6853e-08  
a 2.286236083135524 8.4066e-09 au
q 2.028182352193212 8.3496e-08 au
i 5.0742315006269 4.2787e-06 deg
node 267.1815522813581 4.66e-05 deg
peri 192.5827518657294 5.0461e-05 deg
M 47.65129315741179 1.889e-05 deg
tp 2458833.370840404164
(2019-Dec-15.87084040)
6.6185e-05 TDB
period 1262.641440931021
3.46
6.9642e-06
1.907e-08
d
yr
n .2851165725517059 1.5726e-09 deg/d
Q 2.544289814077835 9.3555e-09 au
  Orbit Determination Parameters
   # obs. used (total)      774  
   data-arc span      10871 days (29.76 yr)  
   first obs. used      1990-05-01  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 02:49:13  

Additional Information
 Earth MOID = 1.04538 au 
 Jupiter MOID = 2.58985 au 
 T_jup = 3.588 
[ 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 15.8   n/a MPO502400  
diameter diameter 2.623 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32608 Hallas           Discovered 2001 Aug. 24 by R. A. Tucker at Goodricke-Pigott.
Tony Hallas (b. 1945) trained as a professional photographer and is one of the finest astroimagers. His photographs have appeared in books, magazines, and on products such as Apple's OS-X Lion operating system. He developed many image-processing techniques, which he has shared in articles and on DVDs.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-06-09Last Updated: 2017-06-12

[ show close-approach data ]
Alternate Designations
 2001 QA231 = 1990 JX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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