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6618 (1936 SO)
Classification: Inner Main-belt Asteroid          SPK-ID: 2006618
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04434429252373691 4.9782e-08  
a 1.875186606189966 6.3373e-09 AU
q 1.792032782788484 9.344e-08 AU
i 23.827951450868 1.0683e-05 deg
node 334.6648340571317 1.3387e-05 deg
peri 110.5867919997073 0.0001327 deg
M 15.89982306430589 0.00012848 deg
tp 2456759.075721200139
(2014-Apr-11.57572120)
0.00033474 JED
period 937.9186364298787
2.57
4.7546e-06
1.302e-08
d
yr
n .3838286030548606 1.9458e-09 deg/d
Q 1.958340429591447 6.6183e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      28243 days (77.33 yr)  
   first obs. used      1936-09-23  
   last obs. used      2014-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45862  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:05:01  

Additional Information
 Earth MOID = .847927 AU 
 T_jup = 3.872 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a PDS3 (MPC 28115)  
rotation period rot_per 8.297 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2009) Minor Planet Bul. 36, 7-13.]
[Warner, B.D. (2012) Minor Planet Bul. 39, 158-167.]

6618 (1936 SO)          Discovered 1936-Sep-16 by Tombaugh, C. W. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1936 SO = 1977 QM2 = 1994 CL1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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