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19255 (1994 VK8)
Classification: TransNeptunian Object          SPK-ID: 2019255
Ephemeris | Orbit Diagram | Orbital Elements | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03221706239179922 0.00017822  
a 42.58846210427789 0.011341 au
q 41.21638696349359 0.018208 au
i 1.485500050713453 0.00027273 deg
node 72.34811966131375 0.0018207 deg
peri 123.786859505144 0.26364 deg
M 262.1368224688162 0.25068 deg
tp 2486796.947290196284
(2096-Jul-07.44729020)
60.262 TDB
period 101516.4362643446
277.94
40.548
0.111
d
yr
n .003546223776636276 1.4164e-06 deg/d
Q 43.96053724506218 0.011706 au
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      7347 days (20.11 yr)  
   first obs. used      1995-12-24  
   last obs. used      2016-02-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .64148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:49:55  

Additional Information
 Earth MOID = 40.2148 au 
 Jupiter MOID = 35.7526 au 
 T_jup = 5.839 
[ hide covariance matrix ]
Orbital Elements at Epoch 2451432.5 (1999-Sep-11.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0286664997004798 0.00013791  
q 41.83661430184792 0.01653 au
tp 2482328.802128757572
(2084-Apr-13.30212876)
94.291 TDB
node 72.391247622056 0.0018249 deg
peri 106.175067957303 0.37627 deg
i 1.485019672448895 0.00027155 deg
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      7347 days (20.11 yr)  
   first obs. used      1995-12-24  
   last obs. used      2016-02-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .64148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:49:55  

Additional Information
 Jupiter MOID = 35.7526 au 
 T_jup = 5.839 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.901963997990237E-8 -2.104508385340896E-6 .009825665878156146 1.475742422867638E-9 4.048689641637207E-5 4.668880795343885E-11
q -2.104508385340896E-6 .0002732328177504634 -1.479537727270135 -2.276689247459718E-7 -.005974977622687941 -1.185270033742106E-8
tp .009825665878156146 -1.479537727270135 8890.728811281664 .001387330043569097 35.4524342247274 8.904446015714338E-5
node 1.475742422867638E-9 -2.276689247459718E-7 .001387330043569097 3.330083770163875E-6 2.194527714083332E-6 -2.361771639254421E-7
peri 4.048689641637207E-5 -.005974977622687941 35.4524342247274 2.194527714083332E-6 .1415819120945949 5.829395773132515E-7
i 4.668880795343885E-11 -1.185270033742106E-8 8.904446015714338E-5 -2.361771639254421E-7 5.829395773132515E-7 7.374097137964882E-8

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.0   n/a PDS3 (MPO 6493)  
rotation period rot_per 4.7 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:
[Romanishin, W.; Tegler, S.C. (1999) Nature 398, 129-132.]

19255 (1994 VK8)          Discovered 1994-Nov-08 by Fitzsimmons, A., O'Ceallaigh, D., Williams, I. P. at La Palma
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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