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JPL Small-Body Database Browser
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32705 (2157 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2032705
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135085873916212 5.4521e-08  
a 3.103747718125074 1.8845e-08 au
q 2.75144569902073 1.6904e-07 au
i 16.54712110471176 6.0559e-06 deg
node 10.29452818973839 1.5693e-05 deg
peri 7.907059607655761 2.7168e-05 deg
M 102.7933214232695 2.1052e-05 deg
tp 2458030.216974384783
(2017-Oct-03.71697438)
0.00011543 TDB
period 1997.22984313457
5.47
1.819e-05
4.98e-08
d
yr
n .1802496599164545 1.6417e-09 deg/d
Q 3.456049737229419 2.0985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1167  
   data-arc span      16636 days (45.55 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52954  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:33:06  

Additional Information
 Earth MOID = 1.75275 au 
 Jupiter MOID = 2.0099 au 
 T_jup = 3.148 
[ 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 13.8   n/a MPO337529  
diameter diameter 9.429 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 98. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Masiero, J.; Jedicke, R.; Durecy, J.; Gwyn, S.; et al. (2009) Icarus 204, 145-171.]
geometric albedo albedo 0.072   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32705 (2157 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2157 T-2 = 1995 UR11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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