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18297 (1978 VG4)
Classification: Main-belt Asteroid          SPK-ID: 2018297
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009078340133087309 4.3463e-08  
a 2.720321969552902 1.3191e-08 au
q 2.695625961441791 1.2181e-07 au
i 3.393603862127303 3.8143e-06 deg
node 57.66019342938944 7.6628e-05 deg
peri 134.1121160543904 0.00023846 deg
M 10.17887431837335 0.00022532 deg
tp 2459154.163188984778
(2020-Oct-31.66318898)
0.0010257 TDB
period 1638.811075147025
4.49
1.192e-05
3.264e-08
d
yr
n .2196714468552776 1.5978e-09 deg/d
Q 2.745017977664013 1.3311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1212  
   data-arc span      15439 days (42.27 yr)  
   first obs. used      1978-11-05  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:26:13  

Additional Information
 Earth MOID = 1.68958 au 
 Jupiter MOID = 2.20969 au 
 T_jup = 3.356 
[ 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 14.83   n/a E2021B10  

18297 (1978 VG4)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1978 VG4 = 1998 FC36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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