|
C/2021 X1 (Maury-Attard) |
| ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
| Perihelion | 27 May 2023 | 15.3 | 3.234 AU | 4.080 AU | 02h42m | +02°33' | 29.2° | 8.8° | 229° |
| Nearest approach | 25 Sep 2023 | 14.6 | 3.432 AU | 2.441 AU | 00h39m | +06°40' | 169.6° | 3.0° | 235° |
| Today | 23 Jun 2026 | 23.5 | 9.682 AU | 8.958 AU | 19h04m | +21°18' | 133.1° | 4.4° | 198° |
C/2021 X1 (Maury-Attard)- 2026-06-23
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.)
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.
This lightcurve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.4 + 5 log[∆] + 13.6 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/2021 X1 (Maury-Attard) are:
e (Eccentricity) : 1.0009280
q (Perihelion distance) : 3.2342710
i (Inclination) : 140.11220
Ω (Longitude of ascending node) : 10.65430
ω (Argument of perihelion) : 334.65400
L (Longitude of perihelion) : 30.62827
B (Latitude of perihelion) : -15.93366
T (Time of perihelion passage) : 2460092.00550
Epoch : 2026 Jun 22
Reference : MPC194178
Classification(s): : Nearly isotropic; New (a > 10000 AU)
Ephemerides
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2026-06-22 00:00 UT 19 05 44.5 +21 18 02 8.955 9.672 132.6 4.4 200 23.5
2026-06-23 00:00 UT 19 05 09.9 +21 18 25 8.957 9.678 132.9 4.4 199 23.5
2026-06-23 12:26 UT 19 04 52.0 +21 18 35 8.958 9.682 133.1 4.4 198 23.5
2026-06-24 00:00 UT 19 04 35.3 +21 18 43 8.959 9.685 133.3 4.4 197 23.5
2026-06-25 00:00 UT 19 04 00.6 +21 18 56 8.961 9.691 133.6 4.4 196 23.5
2026-06-26 00:00 UT 19 03 25.8 +21 19 04 8.964 9.697 133.9 4.3 195 23.5
2026-06-27 00:00 UT 19 02 50.9 +21 19 07 8.967 9.704 134.2 4.3 193 23.5
2026-06-28 00:00 UT 19 02 16.0 +21 19 04 8.970 9.710 134.5 4.3 192 23.5
2026-06-29 00:00 UT 19 01 41.0 +21 18 57 8.973 9.717 134.8 4.3 190 23.5
2026-06-30 00:00 UT 19 01 06.0 +21 18 45 8.977 9.723 135.0 4.2 189 23.5
2026-07-01 00:00 UT 19 00 31.0 +21 18 28 8.981 9.729 135.2 4.2 187 23.5
2026-07-02 00:00 UT 18 59 56.0 +21 18 06 8.985 9.736 135.4 4.2 186 23.5
2026-07-03 00:00 UT 18 59 21.0 +21 17 39 8.989 9.742 135.6 4.2 184 23.5
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.
