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2821 Slavka (1978 SQ)
Classification: Main-belt Asteroid          SPK-ID: 2002821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948322988953422 3.9317e-08  
a 2.439510151544105 8.8312e-09 au
q 1.964214780540242 9.8351e-08 au
i 6.732271750149208 3.9905e-06 deg
node 58.6422749139882 3.5762e-05 deg
peri 349.5366588286025 3.7598e-05 deg
M 305.9774202287119 1.4364e-05 deg
tp 2459209.345532768537
(2020-Dec-25.84553277)
5.6228e-05 TDB
period 1391.72161187001
3.81
7.5572e-06
2.069e-08
d
yr
n .2586724219337803 1.4046e-09 deg/d
Q 2.914805522547967 1.0552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1869  
   data-arc span      35697 days (97.73 yr)  
   first obs. used      1921-11-25  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47241  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:27:18  

Additional Information
 Earth MOID = .9749 au 
 Jupiter MOID = 2.47026 au 
 T_jup = 3.467 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO384776  
diameter diameter 3.935 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.498   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2821 Slavka (1978 SQ)          Discovered 1978-Sep-24 by Vavrova, Z. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 SQ = 1963 VG = 1982 UO2 = A921 WC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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