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4144 Vladvasil'ev (1981 SW6)
Classification: Main-belt Asteroid          SPK-ID: 2004144
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03295109822068223 3.0804e-08  
a 3.155244738864383 1.478e-08 au
q 3.051275959563772 1.0014e-07 au
i 9.264092998192847 3.7321e-06 deg
node 171.5219051053587 1.725e-05 deg
peri 228.0010538356718 5.4615e-05 deg
M 336.2155255094086 5.0381e-05 deg
tp 2459335.750557292093
(2021-May-01.25055729)
0.00028622 TDB
period 2047.142165971092
5.60
1.4384e-05
3.938e-08
d
yr
n .175854909338565 1.2356e-09 deg/d
Q 3.259213518164994 1.5267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2889  
   data-arc span      15268 days (41.80 yr)  
   first obs. used      1979-04-25  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:00:10  

Additional Information
 Earth MOID = 2.06272 au 
 Jupiter MOID = 1.88539 au 
 T_jup = 3.185 
[ 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 11.97   n/a E2021B10  
diameter diameter 32.494 km 0.456 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.032   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4144 Vladvasil'ev (1981 SW6)          Discovered 1981-Sep-28 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 SW6 = 1979 HW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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