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Comet 19P/Borrelly

Available Resources

Comet 19P/Borrelly Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 19P/Borrelly 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.

Comet 19P/Borrelly in Ophiucus on December, 15 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
16h 47m 21s
-20° 29’ 51”

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 behvior 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.

Comet 19P/Borrelly Rise and Set Times

Today's Comet 19P/Borrelly rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 110.5°
Max altitude: 18.0°
Azimuth: 249.5°

Comet 19P/Borrelly Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 19P/Borrelly with respect of the Sun and the orbits of the major planets. The position of Comet 19P/Borrelly 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!

Orbit Diagram of Comet 19P/Borrelly
View Comet 19P/Borrelly in the 3D Solar System Simulator

Comet 19P/Borrelly Ephemeris

The following table lists the ephemerides of Comet 19P/Borrelly computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 19P/Borrelly in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Dec 08 16h 42m 01s -20° 12’ 11” 25.40 Ophiucus
2018 Dec 09 16h 42m 44s -20° 14’ 42” 25.40 Ophiucus
2018 Dec 10 16h 43m 28s -20° 17’ 09” 25.40 Ophiucus
2018 Dec 11 16h 44m 13s -20° 19’ 37” 25.39 Ophiucus
2018 Dec 12 16h 44m 57s -20° 22’ 04” 25.39 Ophiucus
2018 Dec 13 16h 45m 42s -20° 24’ 29” 25.39 Ophiucus
2018 Dec 14 16h 46m 27s -20° 26’ 53” 25.39 Ophiucus
2018 Dec 15 16h 47m 11s -20° 29’ 17” 25.39 Ophiucus
2018 Dec 16 16h 47m 54s -20° 31’ 40” 25.39 Ophiucus
2018 Dec 17 16h 48m 38s -20° 34’ 00” 25.39 Ophiucus
2018 Dec 18 16h 49m 23s -20° 36’ 20” 25.38 Ophiucus
2018 Dec 19 16h 50m 07s -20° 38’ 39” 25.38 Ophiucus
2018 Dec 20 16h 50m 51s -20° 40’ 58” 25.38 Ophiucus
2018 Dec 21 16h 51m 34s -20° 43’ 14” 25.38 Ophiucus

Distance of Comet 19P/Borrelly from Earth

The following chart shows the distance of Comet 19P/Borrelly 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 19P/Borrelly is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 19P/Borrelly from Earth between January 2013 and December 2075

Light Curve of Comet 19P/Borrelly

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 19P/Borrelly, 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.

Predicted magnitude of Comet 19P/Borrelly between January 2013 and December 2075

Comet 19P/Borrelly Orbital Elements

The following table lists the orbital elements of Comet 19P/Borrelly at epoch 30 April 2004 00:00 UTC (JD: 2453126.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.62328927
Orbit inclination i 30.31307022°
Perihelion distance q 1.35979974 AU
203,423,146 km
Aphelion distance Q 5.85953135 AU
876,573,416 km
Semi-major axis a 3.60966555 AU
539,998,281 km
Orbital period period 6.8600 years
2,504.9489 days
Date of perihelion transit Tp 2001-Sep-14 06:05:13
2,452,166.7536 JD
Next perihelion transit 2008-Jul-24 04:51
2,454,671.7025 JD
Argument of perihelion peri 353.3506872275°
Longitude of the ascending node node 75.435976862589°
Mean anomaly M 137.9304349205°
Mean motion n 0.14371551°/day
Closest approach to Earth* 2028-Dec-06
Distance of closest approach* 0.41296654 AU
61,778,915 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.