Comet 77P/Longmore
Comet 77P/Longmore Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet 77P/Longmore is now with respect to the brightest stars and constellations.
More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.
High Precision Live Sky Chart
Comet 77P/Longmore Rise and Set Times
Today's Comet 77P/Longmore rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.
Comet 77P/Longmore Orbit Diagram
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 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 | MagnitudeMag | Right AscensionR.A. | DeclinationDec. | Constellation |
|---|---|---|---|---|
| 2018 Apr 16 | 22.01 | 23h 59m 50s | -10° 10’ 18” | Cetus |
| 2018 Apr 17 | 22.01 | 00h 00m 42s | -10° 03’ 37” | Cetus |
| 2018 Apr 18 | 22.01 | 00h 01m 35s | -09° 56’ 57” | Cetus |
| 2018 Apr 19 | 22.01 | 00h 02m 26s | -09° 50’ 21” | Cetus |
| 2018 Apr 20 | 22.01 | 00h 03m 19s | -09° 43’ 46” | Cetus |
| 2018 Apr 21 | 22.01 | 00h 04m 09s | -09° 37’ 14” | Cetus |
| 2018 Apr 22 | 22.01 | 00h 05m 00s | -09° 30’ 47” | Cetus |
| 2018 Apr 23 | 22.01 | 00h 05m 52s | -09° 24’ 20” | Cetus |
| 2018 Apr 24 | 22.02 | 00h 06m 42s | -09° 17’ 57” | Cetus |
| 2018 Apr 25 | 22.02 | 00h 07m 32s | -09° 11’ 38” | Cetus |
| 2018 Apr 26 | 22.02 | 00h 08m 21s | -09° 05’ 20” | Cetus |
| 2018 Apr 27 | 22.02 | 00h 09m 11s | -08° 59’ 05” | Cetus |
| 2018 Apr 28 | 22.02 | 00h 10m 00s | -08° 52’ 54” | Cetus |
| 2018 Apr 29 | 22.02 | 00h 10m 49s | -08° 46’ 45” | Cetus |
Distance of Comet 77P/Longmore from Earth
The following chart shows the distance of Comet 77P/Longmore from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.
The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 77P/Longmore is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet 77P/Longmore
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 25 June 2010 00:00 UTC (JD: 2455373.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.35791688 |
| Orbit inclination | i | 24.39915525° |
| Perihelion distance | q | 2.31093570 AU 345,711,061 km |
| Aphelion distance | Q |
4.88730904 AU 731,131,027 km |
| Semi-major axis | a |
3.59912237 AU 538,421,044 km |
| Orbital period | period |
6.8300 years 2,493.9822 days |
| Date of perihelion transit | Tp | 2009-Jul-07 22:50:28 2,455,020.4517 JD |
| Next perihelion transit | 2016-May-05 22:24 2,457,514.4339 JD |
|
| Argument of perihelion | peri | 196.7418700749° |
| Longitude of the ascending node | node | 14.913415006414° |
| Mean anomaly | M | 50.961623258556° |
| Mean motion | n | 0.14434746°/day |
| Closest approach to Earth* | 2063-Apr-22 | |
| Distance of closest approach* | 1.00596851 AU 150,490,747 km |
|
* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.