Comet 77P/Longmore
Comet 77P/Longmore Position
Comet 77P/Longmore is currently in the constellation of Pisces. The current Right Ascension is 01h 34m 05s and the Declination is +19° 56’ 30”.
Simplified sky chart showing where Comet 77P/Longmore is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)
Field of view: 60x30 degrees
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Higher precision deep sky finder chart showing where Comet 77P/Longmore is right now (view fullscreen)
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
The distance of Comet 77P/Longmore from Earth is currently 802,816,534 kilometers, equivalent to 5.366497 Astronomical Units. Light takes 44 minutes and 37.9077 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 January 2013 and December 2100 the closest approach of Comet 77P/Longmore to Earth happens on Sun Apr 22 2063 at a distance of 1.00596649 Astronomical Units, or 150,490,445 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 22.76.
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 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 77P/Longmore 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 77P/Longmore 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 77P/Longmore Orbital Elements
The following table lists the orbital elements of Comet 77P/Longmore at epoch 17 July 2010 00:00 UTC (JD: 2455395.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.35790750 |
| Orbit inclination | i | 24.39924222° |
| Perihelion distance | q | 2.31109854 AU 345,735,422 km |
| Aphelion distance | Q |
4.88754823 AU 731,166,809 km |
| Semi-major axis | a |
3.59932338 AU 538,451,115 km |
| Orbital period | period |
6.8300 years 2,494.1911 days |
| Date of perihelion transit | Tp | 2009-Jul-07 23:20:04 2,455,020.4723 JD |
| Next perihelion transit | 2016-May-06 03:55 2,457,514.6634 JD |
|
| Argument of perihelion | peri | 196.75230019549° |
| Longitude of the ascending node | node | 14.912855119912° |
| Mean anomaly | M | 54.129765195928° |
| Mean motion | n | 0.14433537°/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 |
|---|---|---|---|---|
| 2020 Feb 17 | 01h 29m 29s | +19° 29’ 52” | 22.73 | Pisces |
| 2020 Feb 18 | 01h 30m 05s | +19° 33’ 19” | 22.74 | Pisces |
| 2020 Feb 19 | 01h 30m 41s | +19° 36’ 50” | 22.74 | Pisces |
| 2020 Feb 20 | 01h 31m 18s | +19° 40’ 23” | 22.75 | Pisces |
| 2020 Feb 21 | 01h 31m 55s | +19° 43’ 59” | 22.75 | Pisces |
| 2020 Feb 22 | 01h 32m 34s | +19° 47’ 39” | 22.75 | Pisces |
| 2020 Feb 23 | 01h 33m 11s | +19° 51’ 21” | 22.76 | Pisces |
| 2020 Feb 24 | 01h 33m 51s | +19° 55’ 08” | 22.76 | Pisces |
| 2020 Feb 25 | 01h 34m 31s | +19° 58’ 55” | 22.77 | Pisces |
| 2020 Feb 26 | 01h 35m 09s | +20° 02’ 48” | 22.77 | Pisces |
| 2020 Feb 27 | 01h 35m 50s | +20° 06’ 42” | 22.78 | Pisces |
| 2020 Feb 28 | 01h 36m 30s | +20° 10’ 38” | 22.78 | Pisces |
| 2020 Feb 29 | 01h 37m 12s | +20° 14’ 39” | 22.78 | Pisces |
| 2020 Mar 01 | 01h 37m 54s | +20° 18’ 41” | 22.79 | Pisces |