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154276 (2002 SY50)
Classification: Apollo [NEO, PHA]          SPK-ID: 2154276
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6897357429141442 3.2464e-08  
a 1.703991986440142 8.1086e-09 au
q .5286878077531022 5.5694e-08 au
i 8.744567745376262 6.5618e-06 deg
node 34.24387741535948 1.3088e-05 deg
peri 99.43501414291879 1.4063e-05 deg
M 299.5497427333443 1.0356e-05 deg
tp 2459136.925452090370
(2020-Oct-14.42545209)
2.2947e-05 TDB
period 812.4558103348851
2.22
5.7992e-06
1.588e-08
d
yr
n .4431010221363449 3.1628e-09 deg/d
Q 2.879296165127181 1.3701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      4304 days (11.78 yr)  
   first obs. used      2002-08-25  
   last obs. used      2014-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43036  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:26:58  

Additional Information
 Earth MOID = .00282333 au 
 Jupiter MOID = 2.24391 au 
 T_jup = 3.873 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454925.5 (2009-Apr-04.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6900402680902851 3.3593e-08  
q .5286064036406741 5.5102e-08 au
tp 2455071.554330361099
(2009-Aug-28.05433036)
2.0543e-05 TDB
node 34.37936862434017 1.3086e-05 deg
peri 99.35114097560152 1.4166e-05 deg
i 8.747058906303812 6.5381e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      625  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      4304 days (11.78 yr)  
   first obs. used      2002-08-25  
   last obs. used      2014-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43036  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:26:58  

Additional Information
 Jupiter MOID = 2.24391 au 
 T_jup = 3.873 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.12850022621663E-15 -1.849769360848504E-15 4.931423184369899E-13 8.65741062672014E-14 1.153697133006939E-13 -1.772857630048552E-14
q -1.849769360848504E-15 3.036203825898213E-15 -7.790356608116645E-13 -1.442001056138293E-13 -1.871777046027634E-13 2.886537798137754E-14
tp 4.931423184369899E-13 -7.790356608116645E-13 4.21998100974248E-10 1.37867973167726E-11 7.302459878325745E-11 -7.940084703710129E-12
node 8.65741062672014E-14 -1.442001056138293E-13 1.37867973167726E-11 1.712379668031002E-10 -1.671335356729604E-10 -2.301747467106576E-11
peri 1.153697133006939E-13 -1.871777046027634E-13 7.302459878325745E-11 -1.671335356729604E-10 2.006819242937971E-10 2.289466033243127E-11
i -1.772857630048552E-14 2.886537798137754E-14 -7.940084703710129E-12 -2.301747467106576E-11 2.289466033243127E-11 4.274732444208451E-11

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 17.6   n/a MPO211182  
diameter diameter 1.060 km 0.346 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 4.823 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Masi, G. (2002) http://www.bellatrixobservatory.org/2002sy50lc.gif]
geometric albedo albedo 0.143   0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

154276 (2002 SY50)          Discovered 2002-Sep-30 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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