Comet 77P/Longmore is currently in the constellation of Hydra. The current Right Ascension of Comet 77P/Longmore is 14h 25m 58s and the Declination is -25° 40’ 41” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 77P/Longmore is 15.61 (JPL) while the latest observed magnitude is 14.4 (COBS).
Today's rise, transit and set times of Comet 77P/Longmore from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):
- 77P/Longmore is above the horizon from Greenwich, United Kingdom [change].
- Right now it is placed in the South-East direction at an altitude of 2° above the horizon.
- Given its current magnitude, 77P/Longmore is visible with the help of a telescope havng an aperture of 14 inches (350mm) or more.
- Go to interactive sky chart
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Comet 77P/Longmore Position and Finder Charts
Below we provide Comet 77P/Longmore 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 77P/Longmore is right now. Click on the image to see a more detailed fullscreen tracker view.
RA: 14h 25m 58s
Dec: -25° 40’ 41”
Field of view: 60x40 arcmins
Also check out Where is Comet 77P/Longmore?, a page that provides all the information needed to find Comet 77P/Longmore in the sky and additional links to sky charts.
Comet 77P/Longmore Distance from Earth
The distance of Comet 77P/Longmore from Earth is currently 216,870,178 kilometers, equivalent to 1.449688 Astronomical Units. Light takes 12 minutes and 3.4010 seconds to travel from Comet 77P/Longmore and arrive to us.
The following chart shows the distance of Comet 77P/Longmore 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 77P/Longmore from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach of Comet 77P/Longmore to Earth
Between 1 January 2013 and 30 December 2100, the closest approach of Comet 77P/Longmore to Earth happens on Sun Apr 22 2063 at a distance of 1.005949 Astronomical Units, or 150,487,808 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet 77P/Longmore Brightness
The current visual magnitude of Comet 77P/Longmore is 15.61.
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 77P/Longmore, 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 77P/Longmore Orbital Elements
The following table lists the orbital elements of Comet 77P/Longmore at epoch 19 May 2011 00:00 UTC (JD: 2455701.5). Source: JPL Small-Body Database
|Perihelion distance||q||2.31633337 AU
|Date of perihelion transit||Tp||2009-Jul-08 01:51:19
|Next perihelion transit||2016-May-10 18:13
|Argument of perihelion||peri||196.95865461186°|
|Longitude of the ascending node||node||14.909174866021°|
Visualization of Comet 77P/Longmore Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 77P/Longmore with respect of the Sun and the orbits of the major planets. The position of Comet 77P/Longmore 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 77P/Longmore in the 3D Solar System Simulator
Comet 77P/Longmore 15 Days Ephemeris
The following table lists the ephemerides of Comet 77P/Longmore computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 77P/Longmore in our Online Planetarium at the chosen date.
|2023 Mar 24||14h 31m 22s||-23° 59’ 38”||15.69||Libra|
|2023 Mar 25||14h 30m 48s||-24° 12’ 38”||15.68||Libra|
|2023 Mar 26||14h 30m 12s||-24° 25’ 35”||15.67||Libra|
|2023 Mar 27||14h 29m 35s||-24° 38’ 26”||15.66||Libra|
|2023 Mar 28||14h 28m 54s||-24° 51’ 12”||15.65||Libra|
|2023 Mar 29||14h 28m 13s||-25° 03’ 52”||15.64||Hydra|
|2023 Mar 30||14h 27m 29s||-25° 16’ 27”||15.62||Hydra|
|2023 Mar 31||14h 26m 43s||-25° 28’ 57”||15.61||Hydra|
|2023 Apr 01||14h 25m 55s||-25° 41’ 17”||15.61||Hydra|
|2023 Apr 02||14h 25m 05s||-25° 53’ 32”||15.60||Hydra|
|2023 Apr 03||14h 24m 15s||-26° 05’ 39”||15.59||Hydra|
|2023 Apr 04||14h 23m 21s||-26° 17’ 39”||15.58||Hydra|
|2023 Apr 05||14h 22m 27s||-26° 29’ 30”||15.57||Hydra|
|2023 Apr 06||14h 21m 30s||-26° 41’ 12”||15.56||Hydra|