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🌎 Location: Greenwich, United Kingdom [change]

Comet C/2020 A2 (Iwamoto)

Comet C/2020 A2 (Iwamoto) is currently in the constellation of Gemini. The current Right Ascension of Comet C/2020 A2 (Iwamoto) is 07h 39m 57s and the Declination is +20° 04’ 18” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2020 A2 (Iwamoto) is 24.00 (JPL).

Summary of key facts about Comet C/2020 A2 (Iwamoto) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

07h 39m 57s
+20° 04’ 18”

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Additional information about Comet C/2020 A2 (Iwamoto) available on TheSkyLive:

Available Resources

Comet C/2020 A2 (Iwamoto) Position and Finder Charts

Below we provide Comet C/2020 A2 (Iwamoto) finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet C/2020 A2 (Iwamoto) in Gemini on August, 12 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2020 A2 (Iwamoto) in Gemini on August, 12 2020
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2020 A2 (Iwamoto) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2020 A2 (Iwamoto)
RA: 07h 39m 57s
Dec: +20° 04’ 18”
Deep sky finder chart for Comet C/2020 A2 (Iwamoto)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2020 A2 (Iwamoto)?, a page that provides all the information needed to find Comet C/2020 A2 (Iwamoto) in the sky and additional links to sky charts.

Comet C/2020 A2 (Iwamoto) Distance from Earth

The distance of Comet C/2020 A2 (Iwamoto) from Earth is currently 620,389,297 kilometers, equivalent to 4.147046 Astronomical Units. Light takes 34 minutes and 29.3959 seconds to travel from Comet C/2020 A2 (Iwamoto) and arrive to us.

34 minutes and 29.3959 seconds

The following chart shows the distance of Comet C/2020 A2 (Iwamoto) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Comet C/2020 A2 (Iwamoto) from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of C/2020 A2 (Iwamoto) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2020 A2 (Iwamoto) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2020 A2 (Iwamoto) to Earth happens on Sat Feb 22 2020 at a distance of 0.91284560 Astronomical Units, or 136,559,759 kilometers:

Sat Feb 22 2020

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet C/2020 A2 (Iwamoto) brightness

The current visual magnitude of Comet C/2020 A2 (Iwamoto) is 24.00.


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 behavior 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.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2020 A2 (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/2020 A2 (Iwamoto) between January 2013 and December 2100

Comet C/2020 A2 (Iwamoto) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet C/2020 A2 (Iwamoto) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 69.9°
Max altitude: 58.6°
Azimuth: 290.1°

The rise and set times are defined as the time at which the upper limb of Comet C/2020 A2 (Iwamoto) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet C/2020 A2 (Iwamoto) Orbital Elements

The following table lists the orbital elements of Comet C/2020 A2 (Iwamoto) at epoch 21 February 2020 00:00 UTC (JD: 2458901.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99908000
Orbit inclination i 120.75013587°
Perihelion distance q 0.97801241 AU
146,308,575 km
Aphelion distance Q 2,125.12716007 AU
317,914,498,750 km
Semi-major axis a 1,063.05258624 AU
159,030,403,663 km
Orbital period period 34,660.9400 years
12,659,907.9940 days
Date of perihelion transit Tp 2020-Jan-08 07:41:47
2,458,856.8207 JD
Next perihelion transit 36681-Sep-02 07:33
15,118,764.8147 JD
Argument of perihelion peri 68.209216586179°
Longitude of the ascending node node 286.37934668978°
Mean anomaly M 0.0012705110949995°
Mean motion n 0.00002844°/day

Visualization of Comet C/2020 A2 (Iwamoto) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2020 A2 (Iwamoto) with respect of the Sun and the orbits of the major planets. The position of Comet C/2020 A2 (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/2020 A2 (Iwamoto)
View Comet C/2020 A2 (Iwamoto) in the 3D Solar System Simulator

Comet C/2020 A2 (Iwamoto) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2020 A2 (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/2020 A2 (Iwamoto) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Aug 05 07h 35m 47s +20° 57’ 24” 24.00 Gemini
2020 Aug 06 07h 36m 20s +20° 50’ 31” 24.00 Gemini
2020 Aug 07 07h 36m 54s +20° 43’ 41” 24.00 Gemini
2020 Aug 08 07h 37m 27s +20° 36’ 51” 24.00 Gemini
2020 Aug 09 07h 37m 59s +20° 30’ 02” 24.00 Gemini
2020 Aug 10 07h 38m 30s +20° 23’ 13” 24.00 Gemini
2020 Aug 11 07h 39m 02s +20° 16’ 27” 24.00 Gemini
2020 Aug 12 07h 39m 33s +20° 09’ 41” 24.00 Gemini
2020 Aug 13 07h 40m 04s +20° 02’ 56” 24.00 Gemini
2020 Aug 14 07h 40m 33s +19° 56’ 12” 24.00 Gemini
2020 Aug 15 07h 41m 03s +19° 49’ 28” 24.00 Gemini
2020 Aug 16 07h 41m 31s +19° 42’ 47” 24.00 Gemini
2020 Aug 17 07h 42m 00s +19° 36’ 06” 24.00 Gemini
2020 Aug 18 07h 42m 28s +19° 29’ 26” 24.00 Gemini