Comet C/2023 H2 (Lemmon)
Comet C/2023 H2 (Lemmon) is currently in the constellation of Eridanus, at a distance of 477,384,962 kilometers from Earth.
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The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.
Today's rise, transit and set times of Comet C/2023 H2 (Lemmon) from Greenwich, United Kingdom (all times relative to the local timezone Europe/London):
Today Comet C/2023 H2 (Lemmon) is not visible from Greenwich, United Kingdom
- C/2023 H2 (Lemmon) is below the horizon from Greenwich, United Kingdom.
- Given its current magnitude, C/2023 H2 (Lemmon) is visible only through long exposure photography.
- Go to interactive sky chart
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Comet C/2023 H2 (Lemmon) Position and Finder Charts
Field of view: 10x6 degrees
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Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2023 H2 (Lemmon) is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet C/2023 H2 (Lemmon)?, a page that provides all the information needed to find Comet C/2023 H2 (Lemmon) in the sky and additional links to sky charts.
Comet C/2023 H2 (Lemmon) Distance from Earth
The distance of Comet C/2023 H2 (Lemmon) from Earth is currently 477,384,962 kilometers, equivalent to 3.191121 Astronomical Units. Light takes 26 minutes and 32.3848 seconds to travel from Comet C/2023 H2 (Lemmon) and arrive to us.
The following chart shows the distance of Comet C/2023 H2 (Lemmon) 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.
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/2023 H2 (Lemmon) from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach of Comet C/2023 H2 (Lemmon) to Earth
Between 1 January 2000 and 31 December 2099, the closest approach of Comet C/2023 H2 (Lemmon) to Earth happens on Sat Nov 11 2023 at a distance of 0.193016 Astronomical Units, or 28,874,757 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet C/2023 H2 (Lemmon) Brightness and Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2023 H2 (Lemmon), 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.
Comet C/2023 H2 (Lemmon) Orbital Elements
The following table lists the orbital elements of Comet C/2023 H2 (Lemmon) at epoch 01 May 2023 00:00 UTC (JD: 2460066.5). Source: JPL Small-Body Database
Element | Symbol | Value |
---|---|---|
Orbit eccentricity | e | 0.99637280 |
Orbit inclination | i | 113.75162616° |
Perihelion distance | q | 0.89438096 AU 133,797,487 km |
Aphelion distance | Q |
492.25855692 AU 73,640,832,097 km |
Semi-major axis | a |
246.57646894 AU 36,887,314,792 km |
Orbital period | period |
3,872.0026 years 1,414,248.9678 days |
Date of perihelion transit | Tp | 2023-Oct-29 04:23:20 2,460,246.6829 JD |
Next perihelion transit | 5895-Nov-28 03:36 3,874,495.6507 JD |
|
Argument of perihelion | peri | 150.64704509475° |
Longitude of the ascending node | node | 217.04191916104° |
Mean anomaly | M | 359.95413407645° |
Mean motion | n | 0.00025455°/day |
Visualization of Comet C/2023 H2 (Lemmon) Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2023 H2 (Lemmon) with respect of the Sun and the orbits of the major planets. The position of Comet C/2023 H2 (Lemmon) 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!
View Comet C/2023 H2 (Lemmon) in the 3D Solar System Simulator
Comet C/2023 H2 (Lemmon) 15 Days Ephemeris
The following table lists the ephemerides of Comet C/2023 H2 (Lemmon) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2023 H2 (Lemmon) in our Online Planetarium at the chosen date.
Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
---|---|---|---|---|
2024 May 01 | 01h 58m 37s | -51° 17’ 16” | 21.61 | Eridanus |
2024 May 02 | 02h 00m 19s | -51° 28’ 51” | 21.64 | Eridanus |
2024 May 03 | 02h 01m 59s | -51° 40’ 37” | 21.68 | Eridanus |
2024 May 04 | 02h 03m 42s | -51° 52’ 32” | 21.71 | Eridanus |
2024 May 05 | 02h 05m 23s | -52° 04’ 39” | 21.75 | Eridanus |
2024 May 06 | 02h 07m 06s | -52° 16’ 54” | 21.78 | Eridanus |
2024 May 07 | 02h 08m 49s | -52° 29’ 21” | 21.82 | Eridanus |
2024 May 08 | 02h 10m 32s | -52° 41’ 57” | 21.85 | Eridanus |
2024 May 09 | 02h 12m 18s | -52° 54’ 42” | 21.89 | Eridanus |
2024 May 10 | 02h 14m 02s | -53° 07’ 38” | 21.92 | Eridanus |
2024 May 11 | 02h 15m 47s | -53° 20’ 44” | 21.95 | Eridanus |
2024 May 12 | 02h 17m 31s | -53° 34’ 00” | 21.99 | Horologium |
2024 May 13 | 02h 19m 18s | -53° 47’ 26” | 22.02 | Horologium |
2024 May 14 | 02h 21m 05s | -54° 01’ 01” | 22.05 | Horologium |