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2809 Vernadskij (1978 QW2)
Classification: Main-belt Asteroid          SPK-ID: 2002809
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804296122631478 3.2591e-08  
a 2.428773256823298 8.0123e-09 au
q 1.990550639819568 8.1872e-08 au
i 2.474094771424855 3.4904e-06 deg
node 357.2161021143226 7.5443e-05 deg
peri 348.3874936865903 7.6055e-05 deg
M 266.7963455806746 1.0188e-05 deg
tp 2458958.439251326212
(2020-Apr-18.93925133)
3.9616e-05 TDB
period 1382.543756253382
3.79
6.8413e-06
1.873e-08
d
yr
n .2603895886634217 1.2885e-09 deg/d
Q 2.866995873827028 9.4579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2052  
   data-arc span      25327 days (69.34 yr)  
   first obs. used      1950-04-17  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48075  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:27:17  

Additional Information
 Earth MOID = .982494 au 
 Jupiter MOID = 2.5386 au 
 T_jup = 3.485 
[ 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 13.60   n/a PDS3 (MPC 17266)  
diameter diameter 12.014 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.919 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.037   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.648   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=24.80 deg.
U-B UB 0.243   0.054 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=24.80 deg.
Tholen spectral type spec_T BFX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2809 Vernadskij (1978 QW2)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 QW2 = 1963 TJ = A906 QF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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