C/2013 V5 (Oukaimeden)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	14 Sep 2014	5.4	0.682 AU	0.475 AU	10h25m	-29°22'	36.1°	119.7°	208°
Perihelion	26 Sep 2014	6.3	0.637 AU	0.709 AU	14h04m	-29°20'	39.2°	96.1°	131°
Today	16 Sep 2025	30.5	26.903 AU	27.809 AU	11h19m	+27°40'	25.2°	0.9°	351°

The interactive orbit chart above shows the comet'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 C/2013 V5 (Oukaimeden) are:

            e (Eccentricity)                : 0.9980840
            q (Perihelion distance)         : 0.6373060
            i (Inclination)                 : 154.88630
            Ω (Longitude of ascending node) : 278.76790
            ω (Argument of perihelion)      : 314.91330
            L (Longitude of perihelion)     : 321.01400
            B (Latitude of perihelion)      : -17.49131
            T (Time of perihelion passage)  : 2456926.67650
            P (Orbital period in years)     : 6066.37

            Epoch                           : 2020 Sep 26
            Reference                       : MPC102951

            Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)
        

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. The light curve is based on the absolute magnitude and slope parameter as calculated from an MPEC, or the latest values provided by the minor planet center. (9.00 + 5 log[∆] + 10.00 log[r]). The additional green curve shows the effect of forward scattering, occurring when the comet is between the earth and the sun, for a gas-to-dust light ratio δ90 of 0.30. (See Marcus 2007)

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

The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.

The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.

A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-09-16 00:00 UT   11 19 16.6   +27 40 60    27.809   26.903   25.2    0.9   351   30.5 
2025-09-16 01:52 UT   11 19 17.2   +27 40 56    27.809   26.903   25.2    0.9   351   30.5 
2025-09-17 00:00 UT   11 19 24.9   +27 40 21    27.809   26.908   25.7    0.9   349   30.5 
2025-09-18 00:00 UT   11 19 33.3   +27 39 43    27.809   26.912   26.2    0.9   347   30.5 
2025-09-19 00:00 UT   11 19 41.6   +27 39 05    27.809   26.917   26.8    1.0   346   30.5 
2025-09-20 00:00 UT   11 19 49.9   +27 38 29    27.809   26.921   27.3    1.0   344   30.5 
2025-09-21 00:00 UT   11 19 58.2   +27 37 54    27.808   26.926   27.9    1.0   342   30.5 
2025-09-22 00:00 UT   11 20 06.4   +27 37 20    27.807   26.930   28.5    1.0   341   30.5 
2025-09-23 00:00 UT   11 20 14.6   +27 36 46    27.806   26.935   29.1    1.0   339   30.5 
2025-09-24 00:00 UT   11 20 22.8   +27 36 14    27.805   26.939   29.8    1.1   338   30.5 
2025-09-25 00:00 UT   11 20 31.0   +27 35 42    27.803   26.944   30.4    1.1   337   30.5 
2025-09-26 00:00 UT   11 20 39.2   +27 35 12    27.801   26.948   31.1    1.1   335   30.5 

    Terminology:
            
    delta:  distance between comet and earth in AU
    radius: distance between comet 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-comet)    
    phase:  phase angle in degrees (angle sun-comet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km      
    

Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or 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.