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JPL Small-Body Database Browser
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59985 (1999 SN11)
Classification: Main-belt Asteroid          SPK-ID: 2059985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1036864567814961 5.1164e-08  
a 3.100487124175024 2.636e-08 au
q 2.779008599972665 1.6874e-07 au
i 15.87284802774237 6.421e-06 deg
node 41.48621629401455 2.0345e-05 deg
peri 264.3404200226385 3.9649e-05 deg
M 279.2931270533345 3.6215e-05 deg
tp 2459047.545106013749
(2020-Jul-17.04510601)
0.00020155 TDB
period 1994.083431671343
5.46
2.543e-05
6.962e-08
d
yr
n .1805340710836084 2.3023e-09 deg/d
Q 3.421965648377383 2.9093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      7163 days (19.61 yr)  
   first obs. used      1999-09-30  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48591  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:22  

Additional Information
 Earth MOID = 1.82167 au 
 Jupiter MOID = 1.86501 au 
 T_jup = 3.155 
[ 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 12.8   n/a MPO359153  
diameter diameter 7.548 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.721 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.240   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

59985 (1999 SN11)          Discovered 1999-Sep-30 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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