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452238 (2015 SU18)
Classification: Main-belt Asteroid          SPK-ID: 2452238
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203622700589301 1.1903e-07  
a 2.226117678457561 2.5331e-08 au
q 1.772829584940447 2.5548e-07 au
i 6.243746528761404 6.9538e-06 deg
node 125.0718479516275 9.3077e-05 deg
peri 214.5469589697881 9.4877e-05 deg
M 166.2752535464189 2.441e-05 deg
tp 2458440.167616309124
(2018-Nov-17.66761631)
7.6631e-05 TDB
period 1213.16704576488
3.32
2.0707e-05
5.669e-08
d
yr
n .2967439655212746 5.0649e-09 deg/d
Q 2.679405771974675 3.0489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2001-05-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 11:34:00  

Additional Information
 Earth MOID = .767655 au 
 Jupiter MOID = 2.70991 au 
 T_jup = 3.611 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457016.5 (2014-Dec-25.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2044946824369009 1.1941e-07  
q 1.77054451321808 2.566e-07 au
tp 2457226.599256458941
(2015-Jul-23.09925646)
6.7099e-05 TDB
node 125.1431249776233 9.3063e-05 deg
peri 214.4048824323545 9.4838e-05 deg
i 6.245074017590676 6.9594e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2001-05-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 11:34:00  

Additional Information
 Jupiter MOID = 2.70991 au 
 T_jup = 3.611 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.425860170076932E-14 -3.056971231003244E-14 5.322503842873064E-12 1.450602641508536E-16 1.269719989066609E-12 -6.89652876222044E-14
q -3.056971231003244E-14 6.584165600594942E-14 -1.142598538646186E-11 -4.090208010040216E-15 -2.740182494681392E-12 1.484396704903447E-13
tp 5.322503842873064E-12 -1.142598538646186E-11 4.502307840748852E-9 1.683095627929321E-11 1.332935363679145E-9 -3.221933565928914E-11
node 1.450602641508536E-16 -4.090208010040216E-15 1.683095627929321E-11 8.66066733189052E-9 -8.604633899634364E-9 3.07522274849482E-10
peri 1.269719989066609E-12 -2.740182494681392E-12 1.332935363679145E-9 -8.604633899634364E-9 8.994303618980051E-9 -3.142053134290577E-10
i -6.89652876222044E-14 1.484396704903447E-13 -3.221933565928914E-11 3.07522274849482E-10 -3.142053134290577E-10 4.84327258599839E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO361090  

452238 (2015 SU18)          Discovered 2005-Aug-27 by LONEOS at Anderson Mesa
Reference: Last Updated: 2015-11-30

Alternate Designations
 2015 SU18 = 2012 XF146 = 2014 DD79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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