Comet C/2023 H2 (Lemmon)
Comet C/2023 H2 (Lemmon) is currently in the constellation of Canes Venatici.
The current Right Ascension of Comet C/2023 H2 (Lemmon) is 12h 35m 37s and the Declination is +46° 34’ 09” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom ). The current estimated magnitude of Comet C/2023 H2 (Lemmon) is 19.52 (JPL).
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):
- C/2023 H2 (Lemmon) is above the horizon from Greenwich, United Kingdom .
- Right now it is placed in the East-North-East direction at an altitude of 51° above the horizon.
- 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
Below we provide Comet C/2023 H2 (Lemmon) 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.
Field of view: 50x30 degrees
Field of view: 10x6 degrees
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.
RA: 12h 35m 37s
Dec: +46° 34’ 09”
Field of view: 60x40 arcmins
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 335,507,882 kilometers, equivalent to 2.242732 Astronomical Units. Light takes 18 minutes and 39.1338 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
|Perihelion distance||q||0.89438096 AU
|Date of perihelion transit||Tp||2023-Oct-29 04:23:20
|Argument of perihelion||peri||150.64704509475°|
|Longitude of the ascending node||node||217.04191916104°|
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.
|2023 May 25||12h 52m 45s||+45° 58’ 15”||19.81||Canes Venatici|
|2023 May 26||12h 50m 25s||+46° 04’ 28”||19.77||Canes Venatici|
|2023 May 27||12h 48m 06s||+46° 10’ 13”||19.74||Canes Venatici|
|2023 May 28||12h 45m 50s||+46° 15’ 29”||19.70||Canes Venatici|
|2023 May 29||12h 43m 35s||+46° 20’ 17”||19.66||Canes Venatici|
|2023 May 30||12h 41m 21s||+46° 24’ 38”||19.62||Canes Venatici|
|2023 May 31||12h 39m 11s||+46° 28’ 33”||19.59||Canes Venatici|
|2023 Jun 01||12h 37m 01s||+46° 32’ 04”||19.55||Canes Venatici|
|2023 Jun 02||12h 34m 54s||+46° 35’ 11”||19.51||Canes Venatici|
|2023 Jun 03||12h 32m 49s||+46° 37’ 54”||19.47||Canes Venatici|
|2023 Jun 04||12h 30m 47s||+46° 40’ 14”||19.43||Canes Venatici|
|2023 Jun 05||12h 28m 46s||+46° 42’ 11”||19.40||Canes Venatici|
|2023 Jun 06||12h 26m 48s||+46° 43’ 47”||19.36||Canes Venatici|
|2023 Jun 07||12h 24m 53s||+46° 45’ 03”||19.32||Canes Venatici|