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JPL Small-Body Database Browser
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91840 (1999 TZ318)
Classification: Main-belt Asteroid          SPK-ID: 2091840
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1919201808933245 4.2319e-08  
a 3.099333061488334 2.6685e-08 au
q 2.504508499678832 1.3774e-07 au
i .6227524036766495 5.1137e-06 deg
node 134.3294957906731 0.00063446 deg
peri 171.6415134532542 0.00063471 deg
M 344.8351843049537 1.9038e-05 deg
tp 2459084.452848485033
(2020-Aug-22.95284849)
0.00010573 TDB
period 1992.970179287076
5.46
2.5739e-05
7.047e-08
d
yr
n .1806349155353538 2.3329e-09 deg/d
Q 3.694157623297836 3.1807e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1997-03-04  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61649  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:46  

Additional Information
 Earth MOID = 1.48952 au 
 Jupiter MOID = 1.56535 au 
 T_jup = 3.194 
[ 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 15.7   n/a MPO436414  
diameter diameter 3.633 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.070   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91840 (1999 TZ318)          Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TZ318 = 1997 GD27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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