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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 215 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6645999940357873 3.3179e-08  
a .8908530115216243 2.2499e-09 au
q .2987921053775897 2.9856e-08 au
i 7.217901489275537 3.0673e-06 deg
node 61.86563507561396 2.2429e-05 deg
peri 193.6530063705582 2.2093e-05 deg
M 312.580861280034 8.6255e-06 deg
tp 2459240.953738833834
(2021-Jan-26.45373883)
7.4991e-06 TDB
period 307.1195802645005
0.84
1.1635e-06
3.185e-09
d
yr
n 1.172181857275128 4.4406e-09 deg/d
Q 1.482913917665659 3.7452e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 2.34680683807845E-14 3.5E-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)      1110  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      24109 days (66.01 yr)  
   first obs. used      1954-11-24  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:07:58  

Additional Information
 Earth MOID = .0575593 au 
 Jupiter MOID = 3.58269 au 
 T_jup = 6.454 
 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 18.15   n/a E2021B55  
rotation period rot_per 13.4895 h n/a LCDB (Rev. 2020-October); 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.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]

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

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