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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103794493881275 4.7923e-08  
a 3.103506169486814 2.4633e-08 au
q 2.781379317367516 1.6011e-07 au
i 15.85431977165147 5.8501e-06 deg
node 41.4261691052785 1.7567e-05 deg
peri 263.6665314030994 3.4921e-05 deg
M 352.1007576410994 3.0125e-05 deg
tp 2459044.318780266844
(2020-Jul-13.81878027)
0.0001671 TDB
period 1996.996696561602
5.47
2.3776e-05
6.51e-08
d
yr
n .1802707038123009 2.1463e-09 deg/d
Q 3.425633021606112 2.719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:44:18  

Additional Information
 Earth MOID = 1.82419 au 
 Jupiter MOID = 1.85805 au 
 T_jup = 3.154 
[ 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-August); 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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