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(2010 GU21)
Classification: Apollo [NEO, PHA]          SPK-ID: 3515377
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5634630143479012 3.7177e-07  
a 2.17967314573669 1.6903e-06 au
q .9515079447467225 7.9507e-08 au
i 3.189607719341302 5.8176e-06 deg
node 57.20223411272819 3.2184e-05 deg
peri 201.00713016925 3.3795e-05 deg
M 38.23691802810686 0.0013026 deg
tp 2458875.656519881543
(2020-Jan-27.15651988)
0.0041077 TDB
period 1175.399461055087
3.22
0.0013672
3.743e-06
d
yr
n .3062788540645144 3.5626e-07 deg/d
Q 3.407838346726658 2.6427e-06 au
  Orbit Determination Parameters
   # obs. used (total)      446  
   # delay obs. used      3  
   # Doppler obs. used      2  
   data-arc span      206 days  
   first obs. used      2010-02-20  
   last obs. used      2010-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .27409  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Mar-20 06:54:15  

Additional Information
 Earth MOID = .0109414 au 
 Jupiter MOID = 1.68133 au 
 T_jup = 3.455 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.1   n/a MPO196778  
diameter diameter 0.510 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 4.326 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Hicks, M.; Somers, J.; Foster, J.; McAuley, A. (2010) Astronomer's Telegram 2592.Correction to 2592: Astronomer's Telegram 2604, 2010ATel.2604....1H http://www.astronomerstelegram.org]
geometric albedo albedo 0.025   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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