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JPL Small-Body Database Browser
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55388 (2001 SN276)
Classification: Main-belt Asteroid          SPK-ID: 2055388
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1724873610713852 3.3825e-08  
a 2.239373657428979 8.5225e-09 au
q 1.853110004806278 7.3747e-08 au
i 7.726449608543501 3.555e-06 deg
node 101.2001466421172 2.9899e-05 deg
peri 239.9568365613333 3.2045e-05 deg
M 201.4962486981221 1.1786e-05 deg
tp 2459539.421263004239
(2021-Nov-20.92126300)
4.1016e-05 TDB
period 1224.01932501914
3.35
6.9875e-06
1.913e-08
d
yr
n .2941130034808648 1.679e-09 deg/d
Q 2.62563731005168 9.9925e-09 au
  Orbit Determination Parameters
   # obs. used (total)      800  
   data-arc span      8805 days (24.11 yr)  
   first obs. used      1995-12-24  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:27:21  

Additional Information
 Earth MOID = .858029 au 
 Jupiter MOID = 2.76663 au 
 T_jup = 3.604 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457014.5 (2014-Dec-23.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730854877499275 3.3904e-08  
q 1.851923150806783 7.3971e-08 au
tp 2457089.945567410521
(2015-Mar-08.44556741)
3.8201e-05 TDB
node 101.2817485348148 2.9899e-05 deg
peri 239.636229053011 3.2017e-05 deg
i 7.726614350453935 3.5544e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      800  
   data-arc span      8805 days (24.11 yr)  
   first obs. used      1995-12-24  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:27:21  

Additional Information
 Jupiter MOID = 2.76663 au 
 T_jup = 3.604 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.149469713628272E-15 -2.497803153695974E-15 3.159101582007796E-13 1.071520738669391E-14 8.91106307819123E-14 -3.031966020802583E-15
q -2.497803153695974E-15 5.471702310592347E-15 -7.051768742301638E-13 -2.198328847170842E-14 -2.016783375839707E-13 6.548285748005818E-15
tp 3.159101582007796E-13 -7.051768742301638E-13 1.459295833192978E-9 2.113665930143827E-12 4.530416565023514E-10 -1.336281439967841E-12
node 1.071520738669391E-14 -2.198328847170842E-14 2.113665930143827E-12 8.939389865997441E-10 -8.84782176343679E-10 -1.66078848212875E-11
peri 8.91106307819123E-14 -2.016783375839707E-13 4.530416565023514E-10 -8.84782176343679E-10 1.025103247281059E-9 1.600656635821379E-11
i -3.031966020802583E-15 6.548285748005818E-15 -1.336281439967841E-12 -1.66078848212875E-11 1.600656635821379E-11 1.263390505367105E-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 15.9   n/a MPO459231  

55388 (2001 SN276)          Discovered 2001-Sep-21 by NEAT at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 SN276 = 1998 WN45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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