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20220 (1997 GA40)
Classification: Main-belt Asteroid          SPK-ID: 2020220
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 .09327562646583878 3.0287e-08  
a 2.743830389949822 1.1567e-08 au
q 2.487897891411246 8.1376e-08 au
i 13.49429686960386 3.4059e-06 deg
node 188.6351539682518 1.4864e-05 deg
peri 349.9541694669023 2.4172e-05 deg
M 105.3071754179541 1.9481e-05 deg
tp 2458714.887582879353
(2019-Aug-19.38758288)
8.9265e-05 TDB
period 1660.10026828264
4.55
1.0497e-05
2.874e-08
d
yr
n .2168543713160271 1.3712e-09 deg/d
Q 2.999762888488398 1.2646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1920  
   data-arc span      10437 days (28.57 yr)  
   first obs. used      1992-04-07  
   last obs. used      2020-11-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:16  

Additional Information
 Earth MOID = 1.49114 au 
 Jupiter MOID = 1.96116 au 
 T_jup = 3.302 
[ 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 13.78   n/a E2021B10  
rotation period rot_per 2.99603 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

20220 (1997 GA40)          Discovered 1997-Apr-07 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 GA40 = 2000 AV185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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