C/2013 V5 (Oukaimeden)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	18 Sep 2014	5.4	0.678 AU	0.482 AU	10h34m	-30°19'	36.1°	119.2°	210°
Perihelion	1 Oct 2014	6.3	0.621 AU	0.757 AU	14h25m	-29°29'	38.3°	92.7°	128°
Today	23 May 2026	30.7	28.041 AU	27.952 AU	11h08m	+29°34'	94.0°	2.1°	116°

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.)

Light curve

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS. 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. (9.0 + 5 log[∆] + 10.0 log[r]). An additional green curve is displayed when an increase in apparent brightness is expected due to forward scattering of sunlight, which occurs when a dust-rich comet is located between the Earth and the Sun. (See Marcus 2007)

Charts

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.

Orbital elements

The orbital elements of C/2013 V5 (Oukaimeden) are:

    e (Eccentricity)                : 0.9983230
    q (Perihelion distance)         : 0.6206760
    i (Inclination)                 : 154.71340
    Ω (Longitude of ascending node) : 279.59690
    ω (Argument of perihelion)      : 315.46030
    L (Longitude of perihelion)     : 321.25863
    B (Latitude of perihelion)      : -17.43369
    T (Time of perihelion passage)  : 2456931.84330
    P (Orbital period in years)     : 7120.29

    Epoch                           : 2026 May 22
    Reference                       : MPC194135

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

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-05-22 00:00 UT   11 08 39.2   +29 35 40    27.924   28.035   95.2    2.1   117   30.7 
2026-05-23 00:00 UT   11 08 36.6   +29 35 03    27.944   28.040   94.3    2.1   116   30.7 
2026-05-23 09:10 UT   11 08 35.6   +29 34 49    27.952   28.041   94.0    2.1   116   30.7 
2026-05-24 00:00 UT   11 08 34.0   +29 34 25    27.964   28.044   93.4    2.1   116   30.7 
2026-05-25 00:00 UT   11 08 31.6   +29 33 46    27.985   28.049   92.5    2.1   116   30.7 
2026-05-26 00:00 UT   11 08 29.4   +29 33 07    28.005   28.053   91.7    2.1   115   30.7 
2026-05-27 00:00 UT   11 08 27.3   +29 32 26    28.025   28.057   90.8    2.1   115   30.7 
2026-05-28 00:00 UT   11 08 25.4   +29 31 45    28.045   28.062   89.9    2.1   115   30.7 
2026-05-29 00:00 UT   11 08 23.6   +29 31 03    28.065   28.066   89.0    2.1   114   30.7 
2026-05-30 00:00 UT   11 08 22.0   +29 30 20    28.086   28.071   88.1    2.1   114   30.7 
2026-05-31 00:00 UT   11 08 20.5   +29 29 37    28.106   28.075   87.2    2.1   114   30.7 
2026-06-01 00:00 UT   11 08 19.2   +29 28 52    28.126   28.080   86.3    2.1   113   30.7 
2026-06-02 00:00 UT   11 08 18.0   +29 28 07    28.146   28.084   85.4    2.1   113   30.7 

    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.