Comet C/2019 J1 (Lemmon)
Comet C/2019 J1 (Lemmon) is currently in the constellation of Cetus. The current Right Ascension of Comet C/2019 J1 (Lemmon) is 00h 51m 12s and the Declination is -19° 37’ 48” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2019 J1 (Lemmon) is 26.77 (JPL).
Summary of key facts about Comet C/2019 J1 (Lemmon) [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]:
- C/2019 J1 (Lemmon) is above the horizon from Greenwich, United Kingdom [change].
- It is visible looking in the South-South-West direction at an altitude of 18° above the horizon.
- Given its current magnitude, C/2019 J1 (Lemmon) is visible only through long exposure photography.
- See also C/2019 J1 (Lemmon) 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/2019 J1 (Lemmon) available on TheSkyLive:
Comet C/2019 J1 (Lemmon) Position and Finder Charts
Below we provide Comet C/2019 J1 (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
View fullscreen
Field of view: 10x6 degrees
View fullscreen
Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2019 J1 (Lemmon) is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet C/2019 J1 (Lemmon)?, a page that provides all the information needed to find Comet C/2019 J1 (Lemmon) in the sky and additional links to sky charts.
Comet C/2019 J1 (Lemmon) Distance from Earth
The distance of Comet C/2019 J1 (Lemmon) from Earth is currently 1,042,603,418 kilometers, equivalent to 6.969373 Astronomical Units. Light takes 57 minutes and 57.7507 seconds to travel from Comet C/2019 J1 (Lemmon) and arrive to us.
The following chart shows the distance of Comet C/2019 J1 (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/2019 J1 (Lemmon) from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Comet C/2019 J1 (Lemmon) to Earth
Between January 2013 and December 2100, the closest approach of Comet C/2019 J1 (Lemmon) to Earth happens on Wed Jul 3 2019 at a distance of 1.672160 Astronomical Units, or 250,151,621 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet C/2019 J1 (Lemmon) brightness
The current visual magnitude of Comet C/2019 J1 (Lemmon) is 26.77.
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/2019 J1 (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/2019 J1 (Lemmon) 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/2019 J1 (Lemmon) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):
The rise and set times are defined as the time at which the upper limb of Comet C/2019 J1 (Lemmon) 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/2019 J1 (Lemmon) Orbital Elements
The following table lists the orbital elements of Comet C/2019 J1 (Lemmon) at epoch 12 June 2019 00:00 UTC (JD: 2458647.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.96535793 |
| Orbit inclination | i | 24.54961531° |
| Perihelion distance | q | 2.47866322 AU 370,802,741 km |
| Aphelion distance | Q |
140.62267287 AU 21,036,852,475 km |
| Semi-major axis | a |
71.55066804 AU 10,703,827,608 km |
| Orbital period | period |
605.2400 years 221,064.4797 days |
| Date of perihelion transit | Tp | 2019-Apr-09 08:14:56 2,458,582.8437 JD |
| Next perihelion transit | 2624-Jul-10 19:45 2,679,647.3234 JD |
|
| Argument of perihelion | peri | 167.79562325192° |
| Longitude of the ascending node | node | 98.087001785319° |
| Mean anomaly | M | 0.10529174769074° |
| Mean motion | n | 0.00162848°/day |
Visualization of Comet C/2019 J1 (Lemmon) Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2019 J1 (Lemmon) with respect of the Sun and the orbits of the major planets. The position of Comet C/2019 J1 (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/2019 J1 (Lemmon) in the 3D Solar System Simulator
Comet C/2019 J1 (Lemmon) 15 Days Ephemeris
The following table lists the ephemerides of Comet C/2019 J1 (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/2019 J1 (Lemmon) in our Online Planetarium at the chosen date.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2021 Jan 16 | 00h 48m 16s | -20° 21’ 37” | 26.67 | Cetus |
| 2021 Jan 17 | 00h 48m 38s | -20° 15’ 57” | 26.68 | Cetus |
| 2021 Jan 18 | 00h 49m 00s | -20° 10’ 18” | 26.69 | Cetus |
| 2021 Jan 19 | 00h 49m 22s | -20° 04’ 36” | 26.71 | Cetus |
| 2021 Jan 20 | 00h 49m 45s | -19° 58’ 57” | 26.72 | Cetus |
| 2021 Jan 21 | 00h 50m 08s | -19° 53’ 17” | 26.73 | Cetus |
| 2021 Jan 22 | 00h 50m 30s | -19° 47’ 35” | 26.75 | Cetus |
| 2021 Jan 23 | 00h 50m 54s | -19° 41’ 56” | 26.76 | Cetus |
| 2021 Jan 24 | 00h 51m 19s | -19° 36’ 15” | 26.77 | Cetus |
| 2021 Jan 25 | 00h 51m 42s | -19° 30’ 34” | 26.79 | Cetus |
| 2021 Jan 26 | 00h 52m 08s | -19° 24’ 55” | 26.80 | Cetus |
| 2021 Jan 27 | 00h 52m 32s | -19° 19’ 15” | 26.81 | Cetus |
| 2021 Jan 28 | 00h 52m 59s | -19° 13’ 36” | 26.83 | Cetus |
| 2021 Jan 29 | 00h 53m 25s | -19° 07’ 57” | 26.84 | Cetus |