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94556 Janstary (2001 VG17)
Classification: Main-belt Asteroid          SPK-ID: 2094556
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881701491333785 3.4465e-08  
a 2.305457703346255 1.0515e-08 au
q 1.871639383486894 7.961e-08 au
i 1.944935748392667 3.9166e-06 deg
node 283.0323309361004 0.00013813 deg
peri 341.4523659066091 0.00013923 deg
M 8.795309474620773 1.9745e-05 deg
tp 2459365.262030986037
(2021-May-30.76203099)
7.0091e-05 TDB
period 1278.598425385311
3.50
8.7474e-06
2.395e-08
d
yr
n .2815583007553857 1.9263e-09 deg/d
Q 2.739276023205615 1.2494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      2000-06-07  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55335  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:57:47  

Additional Information
 Earth MOID = .855977 au 
 Jupiter MOID = 2.33992 au 
 T_jup = 3.564 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884792498524363 3.4397e-08  
q 1.870769911650879 7.9487e-08 au
tp 2456807.825874677230
(2014-May-30.32587468)
6.8895e-05 TDB
node 283.1086838033583 0.00013814 deg
peri 341.3340792932981 0.00013924 deg
i 1.944922308056602 3.9169e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      2000-06-07  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55335  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:57:47  

Additional Information
 Jupiter MOID = 2.33992 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.183141628215274E-15 -2.718084561737731E-15 -2.991241703309163E-13 6.099889514796057E-15 -7.198250803539424E-14 4.090576282214084E-16
q -2.718084561737731E-15 6.318107586237817E-15 6.510449533228971E-13 -1.354934603951631E-14 1.606320960774622E-13 -8.986655259258824E-16
tp -2.991241703309163E-13 6.510449533228971E-13 4.74656937912587E-9 -5.564039524746032E-11 1.233049454949079E-9 1.547559554127048E-13
node 6.099889514796057E-15 -1.354934603951631E-14 -5.564039524746032E-11 1.908203152172663E-8 -1.908419349270573E-8 4.696098594858723E-11
peri -7.198250803539424E-14 1.606320960774622E-13 1.233049454949079E-9 -1.908419349270573E-8 1.938823833801056E-8 -4.689914407819631E-11
i 4.090576282214084E-16 -8.986655259258824E-16 1.547559554127048E-13 4.696098594858723E-11 -4.689914407819631E-11 1.534241376830571E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.76   n/a E2021B10  
diameter diameter 1.699 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.293   0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

94556 Janstarý           Discovered 2001 Nov. 11 by P. Pravec and P. Kusnirak at Ondrejov.
Jan Starý (b. 1950) has worked as an observer at Ondřejov Observatory of the Astronomical Institute of the Czech Academy of Sciences. He was involved in operations of fireball photographing cameras there for more than 10 years. Name suggested by P. Spurný.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-11-04Last Updated: 2017-11-07

Alternate Designations
 2001 VG17 = 2001 WX49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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