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10278 Virkki (1981 EW30)
Classification: Main-belt Asteroid          SPK-ID: 2010278
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1732848310857804 3.2616e-08  
a 2.157607168498473 3.8577e-09 au
q 1.783726574755746 7.0724e-08 au
i .9300573069381205 3.4732e-06 deg
node 171.0320920691247 0.0001441 deg
peri 175.1140697922812 0.00014436 deg
M 32.67105486783971 7.2254e-06 deg
tp 2459095.444777321278
(2020-Sep-02.94477732)
2.3297e-05 TDB
period 1157.595930628142
3.17
3.1046e-06
8.5e-09
d
yr
n .3109893447920594 8.3406e-10 deg/d
Q 2.5314877622412 4.5262e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2169  
   data-arc span      14625 days (40.04 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:58:44  

Additional Information
 Earth MOID = .774757 au 
 Jupiter MOID = 2.87237 au 
 T_jup = 3.680 
[ 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 15.19   n/a E2021B10  
diameter diameter 2.649 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.230   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

10278 Virkki           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Anne Virkki (b. 1988) is a postdoctoral scholar at the Arecibo Observatory who studies near-Earth asteroids, specializing in understanding the properties of asteroid surfaces and regolith using radar scattering measurements.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

Alternate Designations
 1981 EW30 = 1982 SF12 = 1982 SS12 = 1997 GP15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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