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18261 (5065 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018261
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07598890723946297 7.5394e-08  
a 2.476436830840274 1.382e-08 au
q 2.288255102217163 1.9369e-07 au
i 9.791669431545481 5.5212e-06 deg
node 243.3342039262942 3.3826e-05 deg
peri 244.3294848062237 6.6851e-05 deg
M 336.0575046930602 5.4452e-05 deg
tp 2459491.168657568100
(2021-Oct-03.66865757)
0.00021515 TDB
period 1423.440467988214
3.90
1.1916e-05
3.262e-08
d
yr
n .2529083639927686 2.1171e-09 deg/d
Q 2.664618559463385 1.487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      998  
   data-arc span      17301 days (47.37 yr)  
   first obs. used      1973-09-20  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:59:31  

Additional Information
 Earth MOID = 1.32355 au 
 Jupiter MOID = 2.45345 au 
 T_jup = 3.457 
[ 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 15.15   n/a E2021B10  
diameter diameter 2.865 km 0.773 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18261 (5065 T-2)          Discovered 1973-Sep-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 5065 T-2 = 1060 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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