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681 Gorgo (A909 JB)
Classification: Main-belt Asteroid          SPK-ID: 2000681
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015069005781428 2.4637e-08  
a 3.105440846753738 1.098e-08 au
q 2.790217171471002 7.432e-08 au
i 12.57317495335721 1.0556e-06 deg
node 177.8441594999495 3.3154e-06 deg
peri 115.7838572725447 9.604e-06 deg
M 75.21737454738764 7.6643e-06 deg
tp 2458782.862980118893
(2019-Oct-26.36298012)
4.1902e-05 TDB
period 1998.864332368808
5.47
1.0601e-05
2.902e-08
d
yr
n .1801022681581257 9.5519e-10 deg/d
Q 3.420664522036474 1.2095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3177  
   data-arc span      40825 days (111.77 yr)  
   first obs. used      1909-05-13  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:44:34  

Additional Information
 Earth MOID = 1.8015 au 
 Jupiter MOID = 1.88116 au 
 T_jup = 3.176 
[ 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 10.80   n/a E2021B10  
diameter diameter 20.390 km 2.437 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.4606 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2013) Minor Planet Bull. 40, 189.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.240   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

681 Gorgo (A909 JB)          Discovered 1909-May-13 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A909 JB = 1949 UO = 1954 RD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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