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JPL Small-Body Database Browser
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243550 (1240 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2243550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739846796127065 1.1025e-07  
a 3.129230757198545 3.3428e-08 au
q 2.584792546473129 3.4916e-07 au
i 21.60952610679009 1.3031e-05 deg
node 4.104893036973458 1.9035e-05 deg
peri 10.16127297266112 2.851e-05 deg
M 64.17384614634146 2.0877e-05 deg
tp 2458240.078756870860
(2018-May-01.57875687)
0.00011459 TDB
period 2021.877374010058
5.54
3.2398e-05
8.87e-08
d
yr
n .1780523411694349 2.8531e-09 deg/d
Q 3.673668967923961 3.9244e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      16564 days (45.35 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68531  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:12:09  

Additional Information
 Earth MOID = 1.58598 au 
 Jupiter MOID = 1.79754 au 
 T_jup = 3.083 
[ 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 15.3   n/a MPO433595  
diameter diameter 6.869 km 0.971 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243550 (1240 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 1240 T-2 = 2001 SZ164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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