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4514 Vilen (1972 HX)
Classification: Main-belt Asteroid          SPK-ID: 2004514
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1531936916871942 3.9821e-08  
a 2.343879540052436 9.2376e-09 au
q 1.984811980441721 9.0838e-08 au
i 7.963047025547498 3.5689e-06 deg
node 110.3621031609166 2.9548e-05 deg
peri 88.47527726831747 3.2107e-05 deg
M 161.2513162655616 1.1639e-05 deg
tp 2458413.413455885713
(2018-Oct-21.91345589)
4.1977e-05 TDB
period 1310.694143625304
3.59
7.7485e-06
2.121e-08
d
yr
n .2746636213726117 1.6237e-09 deg/d
Q 2.702947099663151 1.0653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1734  
   data-arc span      17355 days (47.52 yr)  
   first obs. used      1972-04-19  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50579  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:36:51  

Additional Information
 Earth MOID = 1.00187 au 
 Jupiter MOID = 2.29225 au 
 T_jup = 3.534 
[ 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 13.7   n/a MPO337289  
rotation period rot_per 2.89224 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pray, D.; Pravec, P.; Hornoch, K.; Kusnirak, P.; et al. (2015) CBET 4101.]

4514 Vilen (1972 HX)          Discovered 1972-Apr-19 by Smirnova, T. M. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1972 HX = 1972 KA = 1982 BR8 = 1986 CE = 1986 ER1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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