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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07040344086879349 3.2832e-08  
a 2.195164003028596 5.4729e-09 au
q 2.040616903944068 7.362e-08 au
i .9741156765424153 3.5308e-06 deg
node 86.1103076422728 0.00022767 deg
peri 358.1613360389011 0.00022965 deg
M 70.86179055935303 2.9814e-05 deg
tp 2458966.665543475327
(2020-Apr-27.16554348)
9.8194e-05 TDB
period 1187.951979259876
3.25
4.4427e-06
1.216e-08
d
yr
n .3030425524643588 1.1333e-09 deg/d
Q 2.349711102113123 5.8582e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1900  
   data-arc span      11052 days (30.26 yr)  
   first obs. used      1990-12-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:43:33  

Additional Information
 Earth MOID = 1.05632 au 
 Jupiter MOID = 2.76374 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 14.91   n/a MPCxxxxx  
rotation period rot_per 3.603 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:
[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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