Comets»
Below the horizon.Never rises today
Alt: -42.82°Az: 165.67°Direction: South-South-East
Comet C/2023 H2 (Lemmon) is in the constellation of Mensa,at a distance of
Map showing Comet C/2023 H2 (Lemmon) in Mensa on August, 02 2024. Field of view: 50x30 degrees
View interactive star map
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 Magnitudecomes from the JPL Horizons ephemerides service and, in the case of comets, might beinaccurate given the highly dynamic and unpredictablebehavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted Magnitude as adirectional indication. We acknowledge with thanks the comet observations from the COBS Comet ObservationDatabase contributed by observers worldwide and used in this table toreport recent comet observations.
Today's rise,transit and set times ofComet C/2023 H2 (Lemmon) fromGreenwich, UK (all times relative to the local timezone Europe/London):
Today Comet C/2023 H2 (Lemmon) is not visible from Greenwich, UK
- C/2023 H2 (Lemmon) isbelow the horizon from Greenwich, UK.
- Given its current magnitude, C/2023 H2 (Lemmon) is visible only through long exposure photography.
- 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.
Sky map showing Comet C/2023 H2 (Lemmon) in Mensa on August, 02 2024.Field of view: 10x6 degrees. View in interactive sky chart
High 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.
C/2023 H2 (Lemmon)
RA: 05h 39m 02s
Dec: -77° 01’ 09”
Deep sky finder chart for Comet C/2023 H2 (Lemmon).Field of view: 60x40 arcmins. View in deep sky object tracker
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.
The distance of Comet C/2023 H2 (Lemmon) from Earth is currently
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.
Chart of the distance of Comet C/2023 H2 (Lemmon) from Earth in Astronomical Units (au)
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 theLive Position and Data Tracker.
Between 1 January 2000 and 31 December 2099,the closest approach ofComet C/2023 H2 (Lemmon) to Earth happens on Sat Nov 11 2023 at a distance of 0.193016 Astronomical Units, or28,874,757 kilometers:
NOTE: values for the closest approach are computedwith a sampling interval of 1 day.
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 inaccuraciesfor objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepanciesbetween the observed and predicted brightness because of their highly dynamic behaviour.
Chart of the magnitude of Comet C/2023 H2 (Lemmon) as a function of time
The following table lists the orbital elements of Comet C/2023 H2 (Lemmon)at epoch01 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 |
Orbit Diagram of Comet C/2023 H2 (Lemmon)
View Comet C/2023 H2 (Lemmon) in the 3D Solar System Simulator
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.Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2024 Jul 26 | 05h 11m 33s | -74° 57’ 32” | 24.30 | Mensa |
| 2024 Jul 27 | 05h 15m 00s | -75° 14’ 56” | 24.33 | Mensa |
| 2024 Jul 28 | 05h 18m 30s | -75° 32’ 13” | 24.36 | Mensa |
| 2024 Jul 29 | 05h 22m 04s | -75° 49’ 23” | 24.39 | Mensa |
| 2024 Jul 30 | 05h 25m 43s | -76° 06’ 25” | 24.42 | Mensa |
| 2024 Jul 31 | 05h 29m 26s | -76° 23’ 19” | 24.45 | Mensa |
| 2024 Aug 01 | 05h 33m 13s | -76° 40’ 05” | 24.48 | Mensa |
| 2024 Aug 02 | 05h 37m 04s | -76° 56’ 44” | 24.51 | Mensa |
| 2024 Aug 03 | 05h 41m 01s | -77° 13’ 12” | 24.54 | Mensa |
| 2024 Aug 04 | 05h 45m 04s | -77° 29’ 32” | 24.57 | Mensa |
| 2024 Aug 05 | 05h 49m 10s | -77° 45’ 43” | 24.60 | Mensa |
| 2024 Aug 06 | 05h 53m 23s | -78° 01’ 43” | 24.63 | Mensa |
| 2024 Aug 07 | 05h 57m 42s | -78° 17’ 33” | 24.66 | Mensa |
| 2024 Aug 08 | 06h 02m 06s | -78° 33’ 13” | 24.69 | Mensa |
Compute the position of Comet C/2023 H2 (Lemmon)for any date and time between 1 January 2000and 31 December 2099and display the results on an interactive star map.
- Position and finder charts (see also Where is Comet C/2023 H2 (Lemmon)?)
- Distance from Earth (see also How far is Comet C/2023 H2 (Lemmon) from Earth?)
- When does Comet C/2023 H2 (Lemmon) rise and set?
- Brightness (see also How bright is Comet C/2023 H2 (Lemmon)?)
- Orbital elements. Detailed informationabout Comet C/2023 H2 (Lemmon) orbital parameters.
- Interactive orbit visualization. 3dvisualization showing the orbit of Comet C/2023 H2 (Lemmon) with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet C/2023 H2 (Lemmon) for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet C/2023 H2 (Lemmon)in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet C/2023 H2 (Lemmon)with your telescope or on your astrophotographies.
