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JPL Small-Body Database Browser
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136555 (2254 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2136555
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529693196176267 3.8488e-08  
a 2.567742440373603 1.4963e-08 au
q 2.174956626316348 1.0129e-07 au
i 12.8649413746519 8.906e-06 deg
node 9.115465479056976 2.009e-05 deg
peri 59.1853956898619 4.2538e-05 deg
M 342.738180783781 3.6303e-05 deg
tp 2458672.562558792919
(2019-Jul-08.06255879)
0.00015185 TDB
period 1502.884536125571
4.11
1.3137e-05
3.597e-08
d
yr
n .2395393600416424 2.0938e-09 deg/d
Q 2.960528254430857 1.7252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      16479 days (45.12 yr)  
   first obs. used      1973-09-24  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59452  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:40:38  

Additional Information
 Earth MOID = 1.21685 au 
 Jupiter MOID = 2.46473 au 
 T_jup = 3.380 
[ 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 15.5   n/a MPO412866  
diameter diameter 3.182 km 0.548 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136555 (2254 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2254 T-2 = 2002 TX139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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