(465617) 2009 EK1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Oct 2025	24.9	1.463 AU	2.328 AU	12h18m	-01°00'	22.9°	15.3°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of 2009 EK1 are:

            e (Eccentricity)                : 0.2290253
            a (Semimajor axis)              : 1.2408586
            i (Inclination)                 : 9.12439
            Ω (Longitude of ascending node) : 358.38084
            ω (Argument of perihelion)      : 21.88552
            M (Mean anomaly)                : 12.59180
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 20.01515
            B (Latitude of perihelion)      : 3.38876
            P (Orbital period in years)     : 1.38            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-21 00:00 UT   12 18 26.9   -01 00 03     2.328    1.463   22.9   15.3   296   24.9 
2025-10-21 05:19 UT   12 18 58.9   -01 04 11     2.327    1.463   23.0   15.4   295   24.9 
2025-10-22 00:00 UT   12 20 51.2   -01 18 43     2.326    1.465   23.2   15.5   295   24.9 
2025-10-23 00:00 UT   12 23 15.4   -01 37 21     2.324    1.466   23.5   15.7   295   24.9 
2025-10-24 00:00 UT   12 25 39.4   -01 55 57     2.322    1.468   23.8   15.9   295   24.9 
2025-10-25 00:00 UT   12 28 03.3   -02 14 32     2.320    1.470   24.2   16.1   295   24.9 
2025-10-26 00:00 UT   12 30 27.0   -02 33 04     2.318    1.472   24.5   16.3   295   24.9 
2025-10-27 00:00 UT   12 32 50.6   -02 51 34     2.315    1.473   24.8   16.4   295   24.9 
2025-10-28 00:00 UT   12 35 14.1   -03 10 02     2.313    1.475   25.1   16.6   294   24.9 
2025-10-29 00:00 UT   12 37 37.5   -03 28 28     2.311    1.477   25.5   16.8   294   24.9 
2025-10-30 00:00 UT   12 40 00.8   -03 46 51     2.308    1.478   25.8   17.0   294   24.9 
2025-10-31 00:00 UT   12 42 24.0   -04 05 12     2.305    1.480   26.1   17.2   294   24.9 
2025-11-01 00:00 UT   12 44 47.1   -04 23 31     2.303    1.482   26.5   17.4   294   24.9 
2025-11-02 00:00 UT   12 47 10.2   -04 41 47     2.300    1.483   26.8   17.6   294   24.9 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.