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109949 (2001 SY45)
Classification: Main-belt Asteroid          SPK-ID: 2109949
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00359390017249839 4.1571e-08  
a 2.663937259144492 1.7454e-08 au
q 2.654363334569327 1.0993e-07 au
i 8.188142576654343 5.957e-06 deg
node 151.1085693952486 3.1874e-05 deg
peri 93.40001774521436 0.00086717 deg
M 231.4475349606815 0.00086807 deg
tp 2459567.603494121110
(2021-Dec-19.10349412)
0.0038296 TDB
period 1588.124022523853
4.35
1.5608e-05
4.273e-08
d
yr
n .2266825480215875 2.2278e-09 deg/d
Q 2.673511183719656 1.7517e-08 au
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      6694 days (18.33 yr)  
   first obs. used      2001-09-16  
   last obs. used      2020-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:36:10  

Additional Information
 Earth MOID = 1.64735 au 
 Jupiter MOID = 2.29746 au 
 T_jup = 3.370 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO309941  
diameter diameter 4.394 km 0.720 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.069   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

109949 (2001 SY45)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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