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18231 (3286 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2018231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1257510184652395 5.3397e-08  
a 2.731916785154158 1.3708e-08 au
q 2.38837546705874 1.488e-07 au
i 13.22049846943281 6.2311e-06 deg
node 6.570507917367369 1.8637e-05 deg
peri 129.4752945961128 3.2095e-05 deg
M 43.08360729675482 2.3001e-05 deg
tp 2459003.117254945865
(2020-Jun-02.61725495)
0.0001053 TDB
period 1649.299877098288
4.52
1.2414e-05
3.399e-08
d
yr
n .2182744357159412 1.6428e-09 deg/d
Q 3.075458103249576 1.5432e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1053  
   data-arc span      18204 days (49.84 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:37:18  

Additional Information
 Earth MOID = 1.42276 au 
 Jupiter MOID = 1.97314 au 
 T_jup = 3.304 
[ 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 14.66   n/a E2021B10  
rotation period rot_per 31.7696 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

18231 (3286 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 3286 T-1 = 2019 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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