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251346 (2007 SJ)
Classification: Apollo [NEO, PHA]          SPK-ID: 2251346
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 174 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5339082282228493 1.0443e-08  
a 2.01574873888144 1.9657e-08 au
q .9395239011628074 1.7733e-08 au
i 8.197252609375539 3.796e-06 deg
node 306.8148760445533 2.0474e-05 deg
peri 175.0655569880535 2.2236e-05 deg
M 149.1436408710296 1.3053e-05 deg
tp 2458767.432829878934
(2019-Oct-10.93282988)		 3.1617e-05 TDB
period 1045.329055486853
2.86		 1.5291e-05
4.186e-08		 d
yr
n .3443891644553331 5.0376e-09 deg/d
Q 3.091973576600072 3.0152e-08 au
   Orbit Determination Parameters
   # obs. used (total)      965  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      10601 days (29.02 yr)  
   first obs. used      1990-10-14  
   last obs. used      2019-10-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:15:28  

Additional Information
 Earth MOID = .0425038 au 
 Jupiter MOID = 2.01219 au 
 T_jup = 3.623 
[ 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 16.8   n/a MPO437168  
rotation period rot_per 2.718 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hicks, M.; Ebelhar, S.. (2014) Astronomer's Telegram 5801. http://www.astronomerstelegram.org]
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]
[Gorshanov, D.; Devyatkin, A.; Martyusheva, A.; Bekyashev, R. (2015) Minor Planet Bull. 42, 246-247.]
[Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
[Monteiro, F.; Silva, J.S.; Lazzaro, D.; Arcoverde, P.; et al. (2018) Plan. Space Sci. 164, 54-74.]

251346 (2007 SJ)          Discovered 2007-Sep-17 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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