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30173 Greenwood (2000 GG72)
Classification: Main-belt Asteroid          SPK-ID: 2030173
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0130083187055254 4.1159e-08  
a 2.342779430061699 7.1515e-09 au
q 2.312303808578708 9.6318e-08 au
i 4.724123382352685 4.4767e-06 deg
node 181.3602528450842 3.6314e-05 deg
peri 179.689858919937 0.00012228 deg
M 128.5865133260933 0.00011636 deg
tp 2458732.669588554256
(2019-Sep-06.16958855)
0.00042342 TDB
period 1309.771481969965
3.59
5.9972e-06
1.642e-08
d
yr
n .2748571067210451 1.2585e-09 deg/d
Q 2.373255051544691 7.2445e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1220  
   data-arc span      9659 days (26.44 yr)  
   first obs. used      1994-10-09  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5754  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:27:44  

Additional Information
 Earth MOID = 1.30493 au 
 Jupiter MOID = 2.64062 au 
 T_jup = 3.558 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.62   n/a MPCxxxxx  

30173 Greenwood           Discovered 2000 Apr. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Floyd S. Greenwood (b. 2001) is a finalist in the 2014 Broadcom MASTERS, a math and science competition for middle school students, for his biochemistry, medicine, health science, and microbiology project. He attends the Andover West Middle School, Andover, Massachusetts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-01-05Last Updated: 2015-01-07

Alternate Designations
 2000 GG72 = 1998 XZ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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