Comet 77P/Longmore
Comet 77P/Longmore is currently in the constellation of Pisces Austrinus, at a distance of 506,268,270 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 77P/Longmore from Greenwich, United Kingdom (all times relative to the local timezone Europe/London):
- 77P/Longmore is above the horizon from Greenwich, United Kingdom.
- Right now it is placed in the South-South-East direction at an altitude of 5° above the horizon.
- Given its current magnitude, 77P/Longmore is visible only through long exposure photography.
- Go to interactive sky chart
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Comet 77P/Longmore 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 77P/Longmore is right now. Click on the image to see a more detailed fullscreen tracker view.
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 506,268,270 kilometers, equivalent to 3.384194 Astronomical Units. Light takes 28 minutes and 8.7292 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 and Light Curve
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
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.35722445 |
| Orbit inclination | i | 24.39989618° |
| Perihelion distance | q | 2.31633337 AU 346,518,541 km |
| Aphelion distance | Q |
4.89095194 AU 731,675,997 km |
| Semi-major axis | a |
3.60364266 AU 539,097,269 km |
| Orbital period | period |
6.8410 years 2,498.6821 days |
| Date of perihelion transit | Tp | 2009-Jul-08 01:51:19 2,455,020.5773 JD |
| Next perihelion transit | 2016-May-10 18:13 2,457,519.2594 JD |
|
| Argument of perihelion | peri | 196.95865461186° |
| Longitude of the ascending node | node | 14.909174866021° |
| Mean anomaly | M | 98.104583831402° |
| Mean motion | n | 0.14407595°/day |
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.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2024 May 01 | 22h 36m 25s | -31° 45’ 50” | 19.54 | Pisces Austrinus |
| 2024 May 02 | 22h 37m 27s | -31° 43’ 46” | 19.54 | Pisces Austrinus |
| 2024 May 03 | 22h 38m 27s | -31° 41’ 49” | 19.54 | Pisces Austrinus |
| 2024 May 04 | 22h 39m 26s | -31° 39’ 59” | 19.54 | Pisces Austrinus |
| 2024 May 05 | 22h 40m 26s | -31° 38’ 12” | 19.54 | Pisces Austrinus |
| 2024 May 06 | 22h 41m 24s | -31° 36’ 33” | 19.54 | Pisces Austrinus |
| 2024 May 07 | 22h 42m 20s | -31° 34’ 59” | 19.54 | Pisces Austrinus |
| 2024 May 08 | 22h 43m 17s | -31° 33’ 32” | 19.54 | Pisces Austrinus |
| 2024 May 09 | 22h 44m 12s | -31° 32’ 09” | 19.54 | Pisces Austrinus |
| 2024 May 10 | 22h 45m 06s | -31° 30’ 55” | 19.54 | Pisces Austrinus |
| 2024 May 11 | 22h 46m 00s | -31° 29’ 45” | 19.54 | Pisces Austrinus |
| 2024 May 12 | 22h 46m 53s | -31° 28’ 42” | 19.54 | Pisces Austrinus |
| 2024 May 13 | 22h 47m 44s | -31° 27’ 46” | 19.54 | Pisces Austrinus |
| 2024 May 14 | 22h 48m 34s | -31° 26’ 56” | 19.54 | Pisces Austrinus |