C/2019 A5 (PANSTARRS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	13 Feb 2019	21.2	6.344 AU	5.386 AU	09h14m	+00°44'	165.0°	2.3°	33°
Perihelion	6 Jun 2019	21.6	6.311 AU	6.729 AU	09h12m	+12°18'	61.7°	8.1°	109°
Today	27 Apr 2024	25.2	11.239 AU	10.912 AU	17h03m	+50°10'	106.5°	4.9°	222°

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/2019 A5 (PANSTARRS) are:

            e (Eccentricity)                : 0.7061540
            q (Perihelion distance)         : 6.3111800
            i (Inclination)                 : 67.54800
            Ω (Longitude of ascending node) : 146.56340
            ω (Argument of perihelion)      : 355.77490
            L (Longitude of perihelion)     : 144.94729
            B (Latitude of perihelion)      : -3.90432
            T (Time of perihelion passage)  : 2458640.92170
            P (Orbital period in years)     : 99.54

            Epoch                           : 2024 Apr 26
            Reference                       : MPEC 2021-P47

            Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); Halley type (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. (9.50 + 5 log[∆] + 10.00 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
2024-04-27 00:00 UT   17 03 52.6   +50 10 06    10.912   11.239  106.4    4.9   222   25.2 
2024-04-27 02:18 UT   17 03 51.1   +50 10 22    10.912   11.239  106.5    4.9   222   25.2 
2024-04-28 00:00 UT   17 03 36.0   +50 12 55    10.914   11.243  106.6    4.9   221   25.2 
2024-04-29 00:00 UT   17 03 19.0   +50 15 40    10.916   11.246  106.7    4.9   220   25.2 
2024-04-30 00:00 UT   17 03 01.6   +50 18 20    10.918   11.250  106.8    4.9   219   25.2 
2024-05-01 00:00 UT   17 02 43.8   +50 20 56    10.920   11.254  106.9    4.9   218   25.2 
2024-05-02 00:00 UT   17 02 25.7   +50 23 28    10.922   11.258  106.9    4.9   217   25.2 
2024-05-03 00:00 UT   17 02 07.2   +50 25 55    10.924   11.261  107.0    4.9   216   25.2 
2024-05-04 00:00 UT   17 01 48.4   +50 28 18    10.927   11.265  107.1    4.9   214   25.2 
2024-05-05 00:00 UT   17 01 29.2   +50 30 36    10.929   11.269  107.2    4.9   213   25.2 
2024-05-06 00:00 UT   17 01 09.7   +50 32 50    10.932   11.272  107.2    4.9   212   25.2 
2024-05-07 00:00 UT   17 00 49.9   +50 34 59    10.934   11.276  107.3    4.9   211   25.2 

    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.