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43857 (1993 VP2)
Classification: Main-belt Asteroid          SPK-ID: 2043857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822316325682671 1.7472e-08  
a 2.779000494054087 1.3863e-08 au
q 2.27257869711459 5.0341e-08 au
i 22.64375175696318 1.3565e-06 deg
node 231.7999470862596 1.1526e-06 deg
peri 120.6590116717558 8.9659e-06 deg
M 34.39251864192114 9.5803e-06 deg
tp 2459234.843622196711
(2021-Jan-20.34362220)
4.4597e-05 TDB
period 1692.120795661891
4.63
1.2662e-05
3.467e-08
d
yr
n .2127507686938994 1.5919e-09 deg/d
Q 3.285422290993584 1.6389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1805  
   data-arc span      9955 days (27.26 yr)  
   first obs. used      1993-10-18  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44537  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:23:18  

Additional Information
 Earth MOID = 1.34691 au 
 Jupiter MOID = 2.39927 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457074.5 (2015-Feb-21.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833776820002296 1.7628e-08  
q 2.268637908131656 5.0943e-08 au
tp 2457545.523777677114
(2016-Jun-06.02377768)
4.186e-05 TDB
node 231.8570296392757 1.1539e-06 deg
peri 121.2024768431443 8.9087e-06 deg
i 22.66328718328119 1.3602e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1805  
   data-arc span      9955 days (27.26 yr)  
   first obs. used      1993-10-18  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44537  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:23:18  

Additional Information
 Jupiter MOID = 2.39927 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.107447140732647E-16 -8.755875927043651E-16 1.874680860692978E-13 2.072978867685778E-16 6.997755506028547E-14 5.116836481449144E-15
q -8.755875927043651E-16 2.595181628581736E-15 -4.98970312081283E-13 4.761872938514356E-16 -1.988179742666683E-13 -1.208522845610129E-14
tp 1.874680860692978E-13 -4.98970312081283E-13 1.752293713323513E-9 2.100548654097906E-11 3.621564776008363E-10 5.019698831315467E-11
node 2.072978867685778E-16 4.761872938514356E-16 2.100548654097906E-11 1.331565719005107E-12 3.535209289425402E-12 6.135721029002771E-13
peri 6.997755506028547E-14 -1.988179742666683E-13 3.621564776008363E-10 3.535209289425402E-12 7.936465759167485E-11 1.009043752682813E-11
i 5.116836481449144E-15 -1.208522845610129E-14 5.019698831315467E-11 6.135721029002771E-13 1.009043752682813E-11 1.850062141914609E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.17   n/a MPCxxxxx  
diameter diameter 13.236 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 545.192 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.]
geometric albedo albedo 0.044   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43857 (1993 VP2)          Discovered 1993-Nov-15 by Seki, T. at Geisei
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 VP2 = 2001 HF38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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