C/2018 Y1 (Iwamoto) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Perihelion | 4 Feb 2019 | 7.2 | 1.287 AU | 0.411 AU | 12h17m | -04°16' | 129.5° | 36.2° | 295° |
Nearest approach | 11 Feb 2019 | 6.6 | 1.292 AU | 0.307 AU | 09h59m | +19°12' | 172.8° | 5.5° | 225° |
Today | 9 May 2024 | 32.2 | 15.582 AU | 16.255 AU | 23h54m | +10°50' | 46.8° | 2.7° | 256° |
C/2018 Y1 (Iwamoto)- 2024-05-09
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 Y1 (Iwamoto) are:
e (Eccentricity) : 0.9898670
q (Perihelion distance) : 1.2872470
i (Inclination) : 160.44520
Ω (Longitude of ascending node) : 147.41010
ω (Argument of perihelion) : 357.86620
L (Longitude of perihelion) : 149.42093
B (Latitude of perihelion) : -0.71405
T (Time of perihelion passage) : 2458519.05520
P (Orbital period in years) : 1431.81
Epoch : 2024 May 08
Reference : MPEC 2024-A43
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 (11.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 7.46 + 5 log[∆] + 15.68 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
2024-05-09 00:00 UT 23 54 27.3 +10 50 03 16.258 15.579 46.4 2.7 256 32.2
2024-05-09 10:47 UT 23 54 30.6 +10 50 36 16.255 15.582 46.8 2.7 256 32.2
2024-05-10 00:00 UT 23 54 34.6 +10 51 15 16.252 15.585 47.3 2.7 256 32.2
2024-05-11 00:00 UT 23 54 41.8 +10 52 27 16.245 15.591 48.2 2.8 256 32.2
2024-05-12 00:00 UT 23 54 48.7 +10 53 38 16.239 15.596 49.1 2.8 255 32.2
2024-05-13 00:00 UT 23 54 55.5 +10 54 48 16.232 15.602 50.0 2.8 255 32.2
2024-05-14 00:00 UT 23 55 02.1 +10 55 57 16.225 15.608 50.9 2.9 255 32.2
2024-05-15 00:00 UT 23 55 08.5 +10 57 06 16.218 15.613 51.8 2.9 255 32.2
2024-05-16 00:00 UT 23 55 14.8 +10 58 14 16.210 15.619 52.7 3.0 254 32.2
2024-05-17 00:00 UT 23 55 20.8 +10 59 21 16.203 15.625 53.6 3.0 254 32.2
2024-05-18 00:00 UT 23 55 26.7 +11 00 28 16.195 15.630 54.5 3.0 254 32.2
2024-05-19 00:00 UT 23 55 32.4 +11 01 34 16.187 15.636 55.4 3.1 254 32.2
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.