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JPL Small-Body Database Browser
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172284 (2002 TO138)
Classification: Main-belt Asteroid          SPK-ID: 2172284
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3495773542371604 7.3837e-08  
a 2.757036326267782 2.552e-08 au
q 1.79323886179535 2.1316e-07 au
i 7.467029170733334 5.5791e-06 deg
node 288.9890991501309 5.4388e-05 deg
peri 59.53169902734542 5.4712e-05 deg
M 326.6966128714804 1.356e-05 deg
tp 2459155.184951105758
(2020-Nov-01.68495111)
6.4911e-05 TDB
period 1672.099663111607
4.58
2.3216e-05
6.356e-08
d
yr
n .2152981714798486 2.9893e-09 deg/d
Q 3.720833790740214 3.4441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      7026 days (19.24 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:41:18  

Additional Information
 Earth MOID = .800246 au 
 Jupiter MOID = 1.80089 au 
 T_jup = 3.240 
[ 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 15.4   n/a MPO436856  
diameter diameter 4.410 km 0.893 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172284 (2002 TO138)          Discovered 2002-Oct-04 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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