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(2015 SZ2)
Classification: Apollo [NEO]          SPK-ID: 3728574
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2414418557508147 4.6167e-07  
a 1.200775154308398 5.6635e-07 au
q .9108577727127077 1.5072e-07 au
i 4.293432870895343 1.0588e-05 deg
node 184.0953349295872 3.9388e-06 deg
peri 240.474399365712 2.6676e-05 deg
M 159.8990479267339 0.00088057 deg
tp 2458787.031231948594
(2019-Oct-30.53123195)
0.0010246 TDB
period 480.6079679331073
1.32
0.00034002
9.309e-07
d
yr
n .7490512517888719 5.2994e-07 deg/d
Q 1.490692535904089 7.0309e-07 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      19 days  
   first obs. used      2015-09-12  
   last obs. used      2015-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .45261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 07:14:54  

Additional Information
 Earth MOID = .00359031 au 
 Jupiter MOID = 3.79005 au 
 T_jup = 5.263 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457286.5 (2015-Sep-21.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2383463124090689 4.7339e-07  
q .9128250053704706 1.5121e-07 au
tp 2457344.890265122228
(2015-Nov-18.39026512)
2.9678e-05 TDB
node 184.4626308478801 3.8026e-06 deg
peri 239.9316245139299 2.8774e-05 deg
i 4.730855812701264 9.2643e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      240  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      19 days  
   first obs. used      2015-09-12  
   last obs. used      2015-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .45261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 07:14:54  

Additional Information
 Jupiter MOID = 3.79005 au 
 T_jup = 5.263 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.240939338430017E-13 -6.076750567544591E-14 -1.035880341422263E-11 -1.841243776867455E-14 -3.648519810472385E-12 3.6814895993067E-12
q -6.076750567544591E-14 2.286380907010444E-14 1.208014730737945E-12 6.867554651748984E-15 -1.211059864530653E-12 -1.072025474825251E-12
tp -1.035880341422263E-11 1.208014730737945E-12 8.808030785644983E-10 2.870591561421568E-12 7.184771124251391E-10 -1.535535435161501E-10
node -1.841243776867455E-14 6.867554651748984E-15 2.870591561421568E-12 1.446012845210628E-11 -1.236608599691282E-11 -6.5725856055063E-12
peri -3.648519810472385E-12 -1.211059864530653E-12 7.184771124251391E-10 -1.236608599691282E-11 8.279608053723824E-10 -3.006029327918702E-11
i 3.6814895993067E-12 -1.072025474825251E-12 -1.535535435161501E-10 -6.5725856055063E-12 -3.006029327918702E-11 8.582749574492684E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.4   n/a E2015T22  
rotation period rot_per 0.03832 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Thirouin, A.; Moskovitz, N.; Binzel, R.P.; Christensen, E.; et al. (2016) Astron. J. 152, A163.]
[Reshetnyk, V.; Godunova, V.; Andreev, M.; Polyakov, V. (2017) Minor Planet Bull. 44, 65.]

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