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18421 (1993 TV34)
Classification: Main-belt Asteroid          SPK-ID: 2018421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07035438601144033 3.5171e-08  
a 2.195197078224216 5.7363e-09 au
q 2.040755335611644 7.922e-08 au
i .9741211918348291 3.6712e-06 deg
node 86.11153624223543 0.00022941 deg
peri 358.2347192484821 0.00023139 deg
M 10.19051069821601 2.988e-05 deg
tp 2458966.871914005337
(2020-Apr-27.37191401)
9.8575e-05 TDB
period 1187.978828205139
3.25
4.6565e-06
1.275e-08
d
yr
n .3030357035435615 1.1878e-09 deg/d
Q 2.349638820836788 6.1399e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1718  
   data-arc span      10611 days (29.05 yr)  
   first obs. used      1990-12-19  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49917  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:46:38  

Additional Information
 Earth MOID = 1.05683 au 
 Jupiter MOID = 2.76421 au 
 T_jup = 3.666 
[ 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 14.9   n/a MPO502308  
rotation period rot_per 3.603 h n/a LCDB (Rev. 2019-January); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

18421 (1993 TV34)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 TV34 = 1998 FV7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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