C/2018 X3 (PANSTARRS) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 8 Dec 2018 | 20.0 | 2.703 AU | 1.726 AU | 04h45m | +14°32' | 171.0° | 3.3° | 24° |
Perihelion | 1 Jan 2019 | 20.1 | 2.694 AU | 1.820 AU | 04h20m | +21°20' | 146.4° | 11.6° | 80° |
Today | 20 May 2025 | 31.4 | 13.607 AU | 12.688 AU | 15h42m | +05°38' | 154.2° | 1.9° | 176° |
C/2018 X3 (PANSTARRS)- 2025-05-20
astro.vanbuitenen.nl
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/2018 X3 (PANSTARRS) are:
e (Eccentricity) : 0.7829070
q (Perihelion distance) : 2.6944260
i (Inclination) : 43.42600
Ω (Longitude of ascending node) : 78.79660
ω (Argument of perihelion) : 359.86420
L (Longitude of perihelion) : 78.69797
B (Latitude of perihelion) : -0.09335
T (Time of perihelion passage) : 2458485.12380
P (Orbital period in years) : 43.73
Epoch : 2025 May 19
Reference : MPC114604
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. (14.50 + 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
2025-05-20 00:00 UT 15 42 17.6 +05 38 43 12.684 13.604 154.4 1.8 178 31.4
2025-05-20 20:35 UT 15 42 03.8 +05 38 58 12.688 13.607 154.2 1.9 176 31.4
2025-05-21 00:00 UT 15 42 01.5 +05 38 60 12.689 13.607 154.1 1.9 175 31.4
2025-05-22 00:00 UT 15 41 45.3 +05 39 15 12.694 13.610 153.8 1.9 173 31.4
2025-05-23 00:00 UT 15 41 29.2 +05 39 28 12.700 13.614 153.5 1.9 171 31.4
2025-05-24 00:00 UT 15 41 13.1 +05 39 39 12.706 13.617 153.1 1.9 169 31.4
2025-05-25 00:00 UT 15 40 57.1 +05 39 47 12.713 13.621 152.7 2.0 167 31.4
2025-05-26 00:00 UT 15 40 41.1 +05 39 54 12.719 13.624 152.3 2.0 165 31.4
2025-05-27 00:00 UT 15 40 25.1 +05 39 58 12.726 13.628 151.8 2.0 163 31.4
2025-05-28 00:00 UT 15 40 09.2 +05 40 01 12.733 13.631 151.3 2.0 161 31.4
2025-05-29 00:00 UT 15 39 53.4 +05 40 01 12.741 13.635 150.8 2.1 159 31.4
2025-05-30 00:00 UT 15 39 37.7 +05 39 59 12.749 13.638 150.2 2.1 157 31.4
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.