C/2014 E2 (Jacques)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	29 Jun 2014	6.3	0.660 AU	1.631 AU	05h49m	+20°50'	10.7°	16.6°	255°
Nearest approach	27 Aug 2014	7.1	1.311 AU	0.580 AU	22h44m	+61°46'	107.9°	47.2°	186°
Today	19 Apr 2024	28.4	24.980 AU	24.488 AU	18h03m	-10°02'	118.2°	2.0°	262°

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/2014 E2 (Jacques) are:

            e (Eccentricity)                : 0.9986916
            q (Perihelion distance)         : 0.6600717
            i (Inclination)                 : 156.36097
            Ω (Longitude of ascending node) : 56.51877
            ω (Argument of perihelion)      : 344.00393
            L (Longitude of perihelion)     : 71.23332
            B (Latitude of perihelion)      : -6.34395
            T (Time of perihelion passage)  : 2456838.43158
            P (Orbital period in years)     : 11331.20

            Epoch                           : 2020 Dec 17
            Reference                       : MPEC 2020-SI8

            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 gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (7.10 + 5 log[∆] + 11.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 7.08 + 5 log[∆] + 10.30 log[r]).

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
2024-04-19 00:00 UT   18 03 04.1   -10 03 21    24.496   24.976  117.5    2.0   263   28.4 
2024-04-19 18:47 UT   18 03 00.1   -10 02 60    24.488   24.980  118.2    2.0   262   28.4 
2024-04-20 00:00 UT   18 02 59.0   -10 02 54    24.486   24.981  118.4    2.0   262   28.4 
2024-04-21 00:00 UT   18 02 53.8   -10 02 28    24.476   24.986  119.4    2.0   262   28.4 
2024-04-22 00:00 UT   18 02 48.4   -10 02 01    24.467   24.991  120.4    2.0   262   28.4 
2024-04-23 00:00 UT   18 02 42.8   -10 01 35    24.457   24.995  121.3    2.0   261   28.4 
2024-04-24 00:00 UT   18 02 37.1   -10 01 10    24.448   25.000  122.3    1.9   261   28.4 
2024-04-25 00:00 UT   18 02 31.3   -10 00 45    24.438   25.005  123.2    1.9   261   28.4 
2024-04-26 00:00 UT   18 02 25.3   -10 00 20    24.429   25.010  124.2    1.9   260   28.4 
2024-04-27 00:00 UT   18 02 19.2   -09 59 55    24.420   25.014  125.2    1.9   260   28.4 
2024-04-28 00:00 UT   18 02 13.0   -09 59 31    24.412   25.019  126.1    1.9   260   28.4 
2024-04-29 00:00 UT   18 02 06.6   -09 59 07    24.403   25.024  127.1    1.8   259   28.4 

    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.