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JPL Small-Body Database Browser
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18258 (4250 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018258
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1206359427281714 4.3656e-08  
a 2.538347002708572 1.054e-08 au
q 2.232131119065595 1.1369e-07 au
i 14.06892231792419 4.4221e-06 deg
node 176.9198805552699 1.3225e-05 deg
peri 5.842391114762018 1.8847e-05 deg
M 279.6932807870474 1.3234e-05 deg
tp 2458930.014323590085
(2020-Mar-21.51432359)		 5.4818e-05 TDB
period 1477.151073472041
4.04		 9.2004e-06
2.519e-08		 d
yr
n .2437123774711957 1.518e-09 deg/d
Q 2.844562886351549 1.1812e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1711  
   data-arc span      16880 days (46.21 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52502  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:26:38  

Additional Information
 Earth MOID = 1.23605 au 
 Jupiter MOID = 2.11444 au 
 T_jup = 3.395 
[ 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 14.1   n/a MPO365471  

18258 (4250 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 4250 T-2 = 2000 ES137 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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