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18382 (1992 EG22)
Classification: Main-belt Asteroid          SPK-ID: 2018382
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1755102354650516 2.0044e-08  
a 2.169786128931305 6.5049e-09 au
q 1.788966454533768 4.4848e-08 au
i 5.159287225247138 9.787e-07 deg
node 96.70156480100175 6.5408e-06 deg
peri 225.7898323520485 1.126e-05 deg
M 209.4036851902565 7.2309e-06 deg
tp 2459688.855027885609
(2022-Apr-19.35502789)
2.4471e-05 TDB
period 1167.41110339205
3.20
5.2497e-06
1.437e-08
d
yr
n .3083746582107861 1.3867e-09 deg/d
Q 2.55060580332884 7.6466e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1891  
   data-arc span      16928 days (46.35 yr)  
   first obs. used      1974-11-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:27:59  

Additional Information
 Earth MOID = .778798 au 
 Jupiter MOID = 2.75317 au 
 T_jup = 3.664 
[ 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 14.57   n/a E2021B10  
rotation period rot_per 5.883 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

18382 (1992 EG22)          Discovered 1992-Mar-01 by UESAC at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 EG22 = 1974 VY2 = 1990 UQ14 = 1998 BJ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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