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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 Orion. The current Right Ascension of Comet C/2020 A2 (Iwamoto) is 06h 08m 08s and the Declination is +07° 11’ 57” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2020 A2 (Iwamoto) is 26.05 (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]:

06h 08m 08s
+07° 11’ 57”
  • C/2020 A2 (Iwamoto) is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the East-South-East direction at an altitude of 26° above the horizon.
  • Given its current magnitude, C/2020 A2 (Iwamoto) is visible only through long exposure photography.
  • See also C/2020 A2 (Iwamoto) rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

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 Orion on January, 23 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2020 A2 (Iwamoto) in Orion on January, 23 2021
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: 06h 08m 08s
Dec: +07° 11’ 57”
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 620,968,762 kilometers, equivalent to 4.150920 Astronomical Units. Light takes 34 minutes and 31.3288 seconds to travel from Comet C/2020 A2 (Iwamoto) and arrive to us.

34 minutes and 31.3288 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 0.912846 Astronomical Units, or 136,559,807 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 26.05.


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: 82.8°
Max altitude: 45.7°
Azimuth: 277.2°

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 22 February 2020 00:00 UTC (JD: 2458902.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99908225
Orbit inclination i 120.75012824°
Perihelion distance q 0.97801310 AU
146,308,678 km
Aphelion distance Q 2,130.34809765 AU
318,695,539,898 km
Semi-major axis a 1,065.66305538 AU
159,420,924,288 km
Orbital period period 34,788.6900 years
12,706,568.7799 days
Date of perihelion transit Tp 2020-Jan-08 07:41:53
2,458,856.8208 JD
Next perihelion transit 36809-Jun-04 02:24
15,165,425.6007 JD
Argument of perihelion peri 68.209299333397°
Longitude of the ascending node node 286.37933952663°
Mean anomaly M 0.0012941753369441°
Mean motion n 0.00002833°/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
2021 Jan 16 06h 15m 47s +07° 18’ 47” 25.90 Orion
2021 Jan 17 06h 14m 44s +07° 17’ 43” 25.91 Orion
2021 Jan 18 06h 13m 44s +07° 16’ 41” 25.93 Orion
2021 Jan 19 06h 12m 42s +07° 15’ 43” 25.95 Orion
2021 Jan 20 06h 11m 43s +07° 14’ 49” 25.97 Orion
2021 Jan 21 06h 10m 45s +07° 13’ 59” 25.99 Orion
2021 Jan 22 06h 09m 47s +07° 13’ 13” 26.01 Orion
2021 Jan 23 06h 08m 50s +07° 12’ 29” 26.03 Orion
2021 Jan 24 06h 07m 54s +07° 11’ 49” 26.05 Orion
2021 Jan 25 06h 07m 00s +07° 11’ 12” 26.07 Orion
2021 Jan 26 06h 06m 06s +07° 10’ 40” 26.09 Orion
2021 Jan 27 06h 05m 15s +07° 10’ 09” 26.11 Orion
2021 Jan 28 06h 04m 23s +07° 09’ 42” 26.13 Orion
2021 Jan 29 06h 03m 33s +07° 09’ 20” 26.15 Orion