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91318 (1999 GO18)
Classification: Main-belt Asteroid          SPK-ID: 2091318
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071942114703828 4.3336e-08  
a 2.406427196706408 1.3715e-08 au
q 1.90782941122394 1.0335e-07 au
i 7.272324151676753 4.6564e-06 deg
node 122.0177933943327 3.9588e-05 deg
peri 44.54029263416605 4.1251e-05 deg
M 258.0208384277037 1.5145e-05 deg
tp 2459386.748187054408
(2021-Jun-21.24818705)
5.964e-05 TDB
period 1363.507457756559
3.73
1.1656e-05
3.191e-08
d
yr
n .2640249585376853 2.2571e-09 deg/d
Q 2.905024982188876 1.6556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      742  
   data-arc span      18463 days (50.55 yr)  
   first obs. used      1969-03-13  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56265  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:54:37  

Additional Information
 Earth MOID = .923421 au 
 Jupiter MOID = 2.08731 au 
 T_jup = 3.482 
[ 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 15.2   n/a MPO348073  
diameter diameter 5.424 km 0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91318 (1999 GO18)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 GO18 = 1969 ES1 = 2001 XO202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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