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1790 Volkov (1967 ER)
Classification: Main-belt Asteroid          SPK-ID: 2001790
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .100970992235927 3.616e-08  
a 2.238175948056248 5.4912e-09 au
q 2.012185101782422 8.1972e-08 au
i 5.108589678951446 3.4871e-06 deg
node 1.978301482918051 3.8312e-05 deg
peri 147.3691420996607 4.1698e-05 deg
M 340.2402185880826 1.6376e-05 deg
tp 2459067.630425310126
5.5675e-05 TDB
period 1223.037472320911
n .294349116970915 1.0832e-09 deg/d
Q 2.464166794330074 6.0456e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2837  
   data-arc span      34486 days (94.42 yr)  
   first obs. used      1925-12-03  
   last obs. used      2020-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41392  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:28  

Additional Information
 Earth MOID = 1.0249 au 
 Jupiter MOID = 2.52528 au 
 T_jup = 3.625 
[ 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 12.4   n/a MPO256875  
diameter diameter 7.087 km 0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 10.7419 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2007) Minor Planet Bull. 34, 64-65.]
geometric albedo albedo 0.511   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

1790 Volkov (1967 ER)          Discovered 1967-Mar-09 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1999-Jan-03 11:23 < 00:01 Amphi 0.0498386925810866 0.0498378264252494 0.0498395587378639 1.45074837390059 1.45074829439195 2451181.974552508 0.951874516980306 46.0501314798532 32.1483111134675 29.691687209779 180901.372438881 T 41 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:36 2020-Nov-13 04:15

Alternate Designations
 1967 ER = 1926 AB = 1950 BU1 = 1955 SV2 = 1957 FB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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