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JPL Small-Body Database Browser
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59987 (1999 SG16)
Classification: Main-belt Asteroid          SPK-ID: 2059987
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04880665708620396 5.0338e-08  
a 3.121158532253295 2.5049e-08 au
q 2.968825218057929 1.6005e-07 au
i 12.66190559602572 5.5909e-06 deg
node 235.8914684978582 2.1343e-05 deg
peri 122.210462268337 5.3395e-05 deg
M 264.2039376411219 4.9617e-05 deg
tp 2459536.441424796708
(2021-Nov-17.94142480)
0.00027948 TDB
period 2014.05890989562
5.51
2.4246e-05
6.638e-08
d
yr
n .1787435304058 2.1518e-09 deg/d
Q 3.273491846448661 2.6271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      13417 days (36.73 yr)  
   first obs. used      1982-08-16  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:22  

Additional Information
 Earth MOID = 1.9904 au 
 Jupiter MOID = 1.98225 au 
 T_jup = 3.177 
[ 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 13.5   n/a MPO344742  
diameter diameter 9.232 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.099   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59987 (1999 SG16)          Discovered 1999-Sep-29 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SG16 = 2000 RO61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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