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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 215 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6645805927335202 3.316e-08  
a .8908266183511068 2.3957e-09 au
q .2988005363045309 2.9867e-08 au
i 7.217787307523872 3.0673e-06 deg
node 61.86485796576306 2.2429e-05 deg
peri 193.6524050477588 2.2094e-05 deg
M 182.3404042410994 9.4603e-06 deg
tp 2459548.056432538948
(2021-Nov-29.55643254)
8.6347e-06 TDB
period 307.1059318859662
0.84
1.2389e-06
3.392e-09
d
yr
n 1.172233951292332 4.7287e-09 deg/d
Q 1.482852700397683 3.9878e-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 = .0576002 au 
 Jupiter MOID = 3.58156 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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