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JPL Small-Body Database Browser
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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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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017184796480336 3.5134e-08  
a 3.106002194615758 1.4669e-08 au
q 2.790064373595988 1.1121e-07 au
i 12.57226643481453 4.4654e-06 deg
node 177.8442269410297 1.922e-05 deg
peri 115.8192185786449 2.956e-05 deg
M 39.14836355421613 2.2854e-05 deg
tp 2458783.073649515805
(2019-Oct-26.57364952)
0.00012661 TDB
period 1999.406337021218
5.47
1.4165e-05
3.878e-08
d
yr
n .1800534455324073 1.2756e-09 deg/d
Q 3.421940015635529 1.6162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2521  
   data-arc span      40375 days (110.54 yr)  
   first obs. used      1909-05-13  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:33:52  

Additional Information
 Earth MOID = 1.80323 au 
 Jupiter MOID = 1.88182 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 10.7   n/a MPO435701  
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. 2019-August); 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Feb-15 02:03 00:02 Jupiter 1.88789174043265 1.88789130870212 1.88789217216329 4.10863276982102 3.99794224193768 2421274.585090978 2.07103717566627 162.648057536402 19.2002353246438 86.7016598582053 2841416.47718911 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 15:34:07 2020-Feb-22 15:34
1988-Jul-29 04:10 < 00:01 Jupiter 1.90127034722997 1.90126989242139 1.90127080203854 3.75609869151926 3.63555641722531 2447371.673489675 0.552914000597945 56.3637572706248 19.7906626043356 83.1818573657686 2849366.47209071 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 15:34:07 2020-Feb-22 15:34
2060-Jan-14 19:30 00:01 Jupiter 1.92387688087754 1.92387640249042 1.92387735926478 3.34996622780759 3.21585705452447 2473473.312288618 1.15152307160522 73.2933592775338 20.1660670978306 80.4391131887061 2207068.87319587 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 15:34:07 2020-Feb-22 15:34
2131-Jul-08 18:02 00:03 Jupiter 1.95015504958156 1.95015447896953 1.95015562019425 2.92971575169505 2.77751011055707 2499580.251676646 2.92408616521748 99.6151316137825 23.4770247868678 65.7670523000295 1578704.91633496 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 15:34:07 2020-Feb-22 15:34
2141-Aug-22 09:48 00:03 Jupiter 1.97402362560953 1.97402282474438 1.97402442648322 5.06706406261189 4.98166334117167 2503277.908661433 2.68864476581863 240.791665749903 18.5866775523784 -82.4381424609272 4058193.37170828 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 15:34:07 2020-Feb-22 15:34

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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