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505657 (2014 SR339)
Classification: Apollo [NEO, PHA]          SPK-ID: 2505657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3038825623247686 1.4992e-08  
a 1.299766492913289 5.808e-09 au
q .9047901206229206 2.0401e-08 au
i 29.79435488956103 5.2136e-06 deg
node 138.7591764203406 2.0427e-06 deg
peri 299.6432262969498 6.1362e-06 deg
M 232.6445689357613 5.6689e-06 deg
tp 2459191.974701742029
(2020-Dec-08.47470174)
9.6175e-06 TDB
period 541.2481591959865
1.48
3.6278e-06
9.932e-09
d
yr
n .6651292829055953 4.4582e-09 deg/d
Q 1.694742865203657 7.5729e-09 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   # delay obs. used      5  
   # Doppler obs. used      1  
   data-arc span      2143 days (5.87 yr)  
   first obs. used      2014-09-30  
   last obs. used      2020-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36102  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-13 06:02:36  

Additional Information
 Earth MOID = .0357214 au 
 Jupiter MOID = 3.60583 au 
 T_jup = 4.830 
[ show covariance matrix ]

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 18.5   n/a MPO456432  
diameter diameter 0.971 km 0.367 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 8.71 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Franco, L.; Marchini, A.; Baj, G.; Scarfi, G.; et al. (2018) Minor Planet Bull. 45, 399-400.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 248-256.]
geometric albedo albedo 0.068   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

505657 (2014 SR339)          Discovered 2014-Sep-30 by WISE at WISE
Reference: Last Updated: 2017-11-07

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