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JPL Small-Body Database Browser
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34961 (2252 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2034961
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629056973426959 4.3262e-08  
a 2.766696553169119 1.1994e-08 au
q 2.31598592183947 1.2092e-07 au
i 8.943252680001603 5.2999e-06 deg
node 1.030536749273414 2.2142e-05 deg
peri 18.39116736232652 2.5638e-05 deg
M 44.22296284264348 1.1588e-05 deg
tp 2458794.016165976528
(2019-Nov-06.51616598)
5.4114e-05 TDB
period 1680.895522829388
4.60
1.093e-05
2.992e-08
d
yr
n .2141715502900653 1.3927e-09 deg/d
Q 3.217407184498768 1.3948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1468  
   data-arc span      17821 days (48.79 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48747  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:00:13  

Additional Information
 Earth MOID = 1.31958 au 
 Jupiter MOID = 2.26129 au 
 T_jup = 3.302 
[ 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 13.6   n/a MPO347776  
diameter diameter 4.859 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.975 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.430   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

34961 (2252 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2252 T-2 = 2001 SG111 = 2061 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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