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72816 (2001 GJ9)
Classification: Main-belt Asteroid          SPK-ID: 2072816
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07191071045369032 4.88e-08  
a 3.083621586146145 2.4677e-08 au
q 2.861876167116041 1.4112e-07 au
i 8.313486580488279 5.8181e-06 deg
node 192.6756955509325 2.8885e-05 deg
peri 109.3903268301819 5.2403e-05 deg
M 183.7020884872261 4.6685e-05 deg
tp 2460365.078243135301
(2024-Feb-24.57824314)
0.00025998 TDB
period 1977.834930298897
5.42
2.3742e-05
6.5e-08
d
yr
n .1820172120964592 2.1849e-09 deg/d
Q 3.30536700517625 2.6452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      862  
   data-arc span      7716 days (21.13 yr)  
   first obs. used      2000-02-02  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56437  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:50:36  

Additional Information
 Earth MOID = 1.86059 au 
 Jupiter MOID = 1.88117 au 
 T_jup = 3.207 
[ 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 14.41   n/a MPCxxxxx  
diameter diameter 10.084 km 0.432 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.040   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72816 (2001 GJ9)          Discovered 2001-Apr-15 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 GJ9 = 2000 CY42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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