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3558 Shishkin (1978 SQ2)
Classification: Main-belt Asteroid          SPK-ID: 2003558
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06526727143109998 1.3047e-08  
a 2.440770699760796 7.8084e-09 au
q 2.281468255998432 3.1008e-08 au
i 13.40161443578096 6.8523e-07 deg
node 344.8713769891479 1.8688e-06 deg
peri 302.934520517967 1.6109e-05 deg
M 86.89313719154271 1.4425e-05 deg
tp 2458864.319998220961
(2020-Jan-15.81999822)
5.5777e-05 TDB
period 1392.800450669346
3.81
6.6837e-06
1.83e-08
d
yr
n .2584720588128707 1.2403e-09 deg/d
Q 2.600073143523159 8.318e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2535  
   data-arc span      23932 days (65.52 yr)  
   first obs. used      1955-08-25  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39689  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:15:45  

Additional Information
 Earth MOID = 1.29095 au 
 Jupiter MOID = 2.57613 au 
 T_jup = 3.461 
[ 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 12.76   n/a E2021B10  
diameter diameter 8.765 km 0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.875 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Simpson, G.; Chong, E.; Gerhardt, M.; Gorsky, S.; et al. (2013) Minor Planet Bull. 146-151.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.230   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3558 Shishkin (1978 SQ2)          Discovered 1978-Sep-26 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 SQ2 = 1955 QZ = 1984 BO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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