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48249 (2001 SY345)
Classification: Jupiter Trojan          SPK-ID: 2048249
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 .01370633959840342 7.7419e-08  
a 5.110309698062776 8.907e-08 au
q 5.040266057888114 3.9027e-07 au
i 7.539674819775088 5.4566e-06 deg
node 100.4621933152441 4.8696e-05 deg
peri 266.9418098059207 0.00020994 deg
M 199.0510309376207 0.00020516 deg
tp 2460886.991947609619
(2025-Jul-30.49194761)
0.0024169 TDB
period 4219.58031229295
11.55
0.00011032
3.02e-07
d
yr
n .08531654177814983 2.2305e-09 deg/d
Q 5.180353338237439 9.0291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      848  
   data-arc span      10756 days (29.45 yr)  
   first obs. used      1990-08-22  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:02:54  

Additional Information
 Earth MOID = 4.04707 au 
 Jupiter MOID = .069434 au 
 T_jup = 2.983 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456556.5 (2013-Sep-21.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01442700541860382 7.6769e-08  
q 5.056546296121118 3.8629e-07 au
tp 2456776.926328873308
(2014-Apr-29.42632887)
0.0023086 TDB
node 100.465065772393 4.8678e-05 deg
peri 276.6323213332814 0.00020288 deg
i 7.534256994089754 5.4518e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      848  
   data-arc span      10756 days (29.45 yr)  
   first obs. used      1990-08-22  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:02:54  

Additional Information
 Jupiter MOID = .069434 au 
 T_jup = 2.983 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.893409216168249E-15 -2.887686901250525E-14 -2.111372435816205E-11 -2.098635715860075E-14 -2.07406117730647E-12 -1.001327451870222E-15
q -2.887686901250525E-14 1.4922160639535E-13 1.417539909047313E-10 1.052186277000297E-13 1.337361809104933E-11 7.174569194707077E-15
tp -2.111372435816205E-11 1.417539909047313E-10 5.329848213305474E-6 5.66377522942738E-11 4.547527256000166E-7 -2.498778732790179E-11
node -2.098635715860075E-14 1.052186277000297E-13 5.66377522942738E-11 2.369522725190221E-9 -2.343040609537961E-9 -1.07804368407981E-11
peri -2.07406117730647E-12 1.337361809104933E-11 4.547527256000166E-7 -2.343040609537961E-9 4.115933743353345E-8 8.602925149357376E-12
i -1.001327451870222E-15 7.174569194707077E-15 -2.498778732790179E-11 -1.07804368407981E-11 8.602925149357376E-12 2.972219695957617E-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 12.1   n/a MPO351174  
diameter diameter 18.713 km 0.785 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.080   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

48249 (2001 SY345)          Discovered 2001-Sep-23 by NEAT at Haleakala
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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