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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 158 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3039206783391921 1.356e-08  
a 1.299705836212659 3.7696e-09 au
q .9046983568295005 1.8424e-08 au
i 29.7952877504218 4.5635e-06 deg
node 138.7565071615865 1.86e-06 deg
peri 299.6606990238587 5.7739e-06 deg
M 5.66499896776361 5.0953e-06 deg
tp 2459191.983456582109
(2020-Dec-08.48345658)
7.6298e-06 TDB
period 541.2102716853735
1.48
2.3545e-06
6.446e-09
d
yr
n .6651758453861754 2.8938e-09 deg/d
Q 1.694713315595817 4.9152e-09 au
  Orbit Determination Parameters
   # obs. used (total)      766  
   # delay obs. used      5  
   # Doppler obs. used      1  
   data-arc span      2417 days (6.62 yr)  
   first obs. used      2014-09-30  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35883  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-13 05:58:08  

Additional Information
 Earth MOID = .0354993 au 
 Jupiter MOID = 3.60557 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 18.55   n/a MPCxxxxx  
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. 2020-October); 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

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