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30720 (1969 GB)
Classification: Main-belt Asteroid          SPK-ID: 2030720
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 .08797837370162578 4.7018e-08  
a 3.183924289225181 2.1308e-08 au
q 2.903807808270045 1.5026e-07 au
i 10.2853313338259 4.1135e-06 deg
node 269.4486078046414 2.9666e-05 deg
peri 298.0437223631742 3.9186e-05 deg
M 38.3669483175776 2.4774e-05 deg
tp 2458979.344735876234
(2020-May-09.84473588)
0.00014343 TDB
period 2075.116697464316
5.68
2.0831e-05
5.703e-08
d
yr
n .1734842191959137 1.7415e-09 deg/d
Q 3.464040770180317 2.3182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1540  
   data-arc span      18731 days (51.28 yr)  
   first obs. used      1969-04-09  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52011  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:26  

Additional Information
 Earth MOID = 1.91455 au 
 Jupiter MOID = 1.65271 au 
 T_jup = 3.168 
[ 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 13.29   n/a E2021B10  
rotation period rot_per 12.0638 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.]

30720 (1969 GB)          Discovered 1969-Apr-09 by Cesco, C. U. at El Leoncito
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1969 GB = 1999 RN220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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