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162421 (2000 ET70)
Classification: Aten [NEO, PHA]          SPK-ID: 2162421
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 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237548593474022 1.366e-08  
a .9466521208982869 1.0073e-09 au
q .8294993208255994 1.3374e-08 au
i 22.32402808938503 1.0421e-06 deg
node 331.1427508128715 4.7112e-07 deg
peri 46.09870497209859 3.5065e-06 deg
M 183.176895566238 4.9728e-06 deg
tp 2459561.742042894883
(2021-Dec-13.24204289)
4.7884e-06 TDB
period 336.4217342108799
0.92
5.3699e-07
1.47e-09
d
yr
n 1.070085441549803 1.708e-09 deg/d
Q 1.063804920970974 1.132e-09 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   # delay obs. used      18  
   # Doppler obs. used      0  
   data-arc span      16064 days (43.98 yr)  
   first obs. used      1977-02-18  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:09:52  

Additional Information
 Earth MOID = .0307119 au 
 Jupiter MOID = 4.13923 au 
 T_jup = 6.280 
[ 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 18.0   n/a MPO294169  
rotation period rot_per 8.947 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Alvarez, E.M.; Magnetta, B.J.; Rastede, F.W. (2012) Minor Planet Bull. 39, 170.]
[Naidu, S.; Margot, J.L.; Taylor, P.A.; Nolan, M.C.; et al. (2012) Bull. Amer. Astron. Soc. 44, 302.06.]
[Naidu, S.P.; Margot, J.-L.; Busch, M.W.; Taylor, P.A.; et al. (2013) Icarus 226, 323-335.]
[Marshall, S.E.; Howell, E.S.; Magri, C.; Vervack Jr., R.J.; et al. (2017) Icarus 292, 22-35.]

162421 (2000 ET70)          Discovered 2000-Mar-08 by LINEAR at Socorro
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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