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162004 (1991 VE)
Classification: Aten [NEO]          SPK-ID: 2162004
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 191 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6646814904601742 3.3686e-08  
a .8907697520341412 3.3633e-09 au
q .2986915855952484 3.0271e-08 au
i 7.219863345315557 3.2983e-06 deg
node 61.87700316750194 2.3107e-05 deg
peri 193.64068510 2.2948e-05 deg
M 329.2226431325496 1.0523e-05 deg
tp 2458626.752788405397
(2019-May-23.25278841)
9.1171e-06 TDB
period 307.076525987787
0.84
1.7392e-06
4.762e-09
d
yr
n 1.172346205370051 6.6397e-09 deg/d
Q 1.482847918473034 5.5989e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 2.312944326554456E-14 3.794E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      942  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      23728 days (64.96 yr)  
   first obs. used      1954-11-24  
   last obs. used      2019-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41478  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-12 04:57:08  

Additional Information
 Earth MOID = .0576333 au 
 Jupiter MOID = 3.58321 au 
 T_jup = 6.455 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.2   n/a MPO257724  
rotation period rot_per 13.4802 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Warner, B.D. (2015) Minor Planet Bull. 42, 115-127.]

162004 (1991 VE)          Discovered 1991-Nov-03 by Helin, E. F., Lawrence, K. J. at Palomar
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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Alternate Designations
 1991 VE = 1997 WP23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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