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Comet C/2018 Y1 (Iwamoto)

Available Resources

Comet C/2018 Y1 (Iwamoto) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2018 Y1 (Iwamoto) is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet C/2018 Y1 (Iwamoto) in Virgo on January, 18 2019
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
13h 56m 08s
-21° 03’ 09”

The Observed Magnitude and Coma Diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behvior of comets. When available please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

Comet C/2018 Y1 (Iwamoto) Rise and Set Times

Today's Comet C/2018 Y1 (Iwamoto) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 111.3°
Max altitude: 17.2°
Azimuth: 248.8°

Comet C/2018 Y1 (Iwamoto) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2018 Y1 (Iwamoto) with respect of the Sun and the orbits of the major planets. The position of Comet C/2018 Y1 (Iwamoto) and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Comet C/2018 Y1 (Iwamoto)
View Comet C/2018 Y1 (Iwamoto) in the 3D Solar System Simulator

Comet C/2018 Y1 (Iwamoto) Ephemeris

The following table lists the ephemerides of Comet C/2018 Y1 (Iwamoto) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2018 Y1 (Iwamoto) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Jan 11 14h 08m 13s -22° 50’ 17” 13.73 Hydra
2019 Jan 12 14h 07m 08s -22° 40’ 22” 13.65 Hydra
2019 Jan 13 14h 05m 57s -22° 29’ 38” 13.57 Virgo
2019 Jan 14 14h 04m 39s -22° 18’ 01” 13.49 Virgo
2019 Jan 15 14h 03m 12s -22° 05’ 26” 13.40 Virgo
2019 Jan 16 14h 01m 40s -21° 51’ 45” 13.32 Virgo
2019 Jan 17 13h 59m 57s -21° 36’ 51” 13.23 Virgo
2019 Jan 18 13h 58m 06s -21° 20’ 35” 13.14 Virgo
2019 Jan 19 13h 56m 06s -21° 02’ 48” 13.05 Virgo
2019 Jan 20 13h 53m 52s -20° 43’ 17” 12.95 Virgo
2019 Jan 21 13h 51m 24s -20° 21’ 46” 12.86 Virgo
2019 Jan 22 13h 48m 43s -19° 58’ 00” 12.75 Virgo
2019 Jan 23 13h 45m 46s -19° 31’ 37” 12.65 Virgo
2019 Jan 24 13h 42m 29s -19° 02’ 17” 12.54 Virgo

Distance of Comet C/2018 Y1 (Iwamoto) from Earth

The following chart shows the distance of Comet C/2018 Y1 (Iwamoto) from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of C/2018 Y1 (Iwamoto) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2018 Y1 (Iwamoto) from Earth between January 2013 and December 2075

Light Curve of Comet C/2018 Y1 (Iwamoto)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2018 Y1 (Iwamoto), according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Comet C/2018 Y1 (Iwamoto) between January 2013 and December 2075

Comet C/2018 Y1 (Iwamoto) Orbital Elements

The following table lists the orbital elements of Comet C/2018 Y1 (Iwamoto) at epoch 19 December 2018 00:00 UTC (JD: 2458472.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00000000
Orbit inclination i 160.47205929°
Perihelion distance q 1.24643336 AU
186,463,777 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2019-Feb-04 08:55:44
2,458,518.8720 JD
Argument of perihelion peri 357.43646420896°
Longitude of the ascending node node 145.93559384114°
Mean anomaly M °
Mean motion n 0.00000000°/day
Closest approach to Earth* 2019-Feb-11
Distance of closest approach* 0.26517377 AU
39,669,431 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.