Comet 19P/Borrelly
Comet 19P/Borrelly is in the constellation of
Libra,
at a distance of
View interactive star map
Celestial Coordinates
Apparent
J2000
Additional Information
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.
Rise and Set Times
Today's rise, transit and set times of Comet 19P/Borrelly from Greenwich, UK (all times relative to the local timezone Europe/London):
- 19P/Borrelly is below the horizon from Greenwich, UK.
- Given its current magnitude, 19P/Borrelly is visible only through long exposure photography.
- Go to interactive sky chart
If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.
Finder Charts
High precision deep sky finder chart, 60 arcmin wide, showing where Comet 19P/Borrelly is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet 19P/Borrelly?, a page that provides all the information needed to find Comet 19P/Borrelly in the sky and additional links to sky charts.
Distance from Earth
The distance of Comet 19P/Borrelly from Earth is currently
The following chart shows the distance of Comet 19P/Borrelly 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 19P/Borrelly from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach
Between 1 January 2013 and 30 December 2100, the closest approach of Comet 19P/Borrelly to Earth happens on Wed Dec 6 2028 at a distance of 0.414136 Astronomical Units, or 61,953,874 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
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.
Orbital Elements
The following table lists the orbital elements of Comet 19P/Borrelly at epoch 09 February 2021 00:00 UTC (JD: 2459255.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.63794908 |
| Orbit inclination | i | 29.32349908° |
| Perihelion distance | q | 1.30589761 AU 195,359,503 km |
| Aphelion distance | Q |
5.90799157 AU 883,822,961 km |
| Semi-major axis | a |
3.60694459 AU 539,591,232 km |
| Orbital period | period |
6.8504 years 2,502.1171 days |
| Date of perihelion transit | Tp | 2022-Feb-01 18:03:22 2,459,612.2523 JD |
| Next perihelion transit | 2028-Dec-08 20:52 2,462,114.3695 JD |
|
| Argument of perihelion | peri | 351.85637184474° |
| Longitude of the ascending node | node | 74.310740143697° |
| Mean anomaly | M | 308.67113065509° |
| Mean motion | n | 0.14387816°/day |
Orbit Visualization
View Comet 19P/Borrelly in the 3D Solar System Simulator
15 Days Ephemeris
The following table lists the ephemerides of Comet 19P/Borrelly computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2024 Sep 30 | 15h 19m 51s | -09° 30’ 49” | 25.43 | Libra |
| 2024 Oct 01 | 15h 20m 24s | -09° 35’ 05” | 25.44 | Libra |
| 2024 Oct 02 | 15h 20m 58s | -09° 39’ 20” | 25.45 | Libra |
| 2024 Oct 03 | 15h 21m 33s | -09° 43’ 34” | 25.45 | Libra |
| 2024 Oct 04 | 15h 22m 07s | -09° 47’ 48” | 25.46 | Libra |
| 2024 Oct 05 | 15h 22m 42s | -09° 52’ 02” | 25.46 | Libra |
| 2024 Oct 06 | 15h 23m 18s | -09° 56’ 14” | 25.47 | Libra |
| 2024 Oct 07 | 15h 23m 53s | -10° 00’ 26” | 25.47 | Libra |
| 2024 Oct 08 | 15h 24m 29s | -10° 04’ 37” | 25.48 | Libra |
| 2024 Oct 09 | 15h 25m 05s | -10° 08’ 48” | 25.49 | Libra |
| 2024 Oct 10 | 15h 25m 42s | -10° 12’ 57” | 25.49 | Libra |
| 2024 Oct 11 | 15h 26m 18s | -10° 17’ 06” | 25.50 | Libra |
| 2024 Oct 12 | 15h 26m 55s | -10° 21’ 14” | 25.50 | Libra |
| 2024 Oct 13 | 15h 27m 32s | -10° 25’ 21” | 25.51 | Libra |
Additional Resources
- Position and finder charts (see also Where is Comet 19P/Borrelly?)
- Distance from Earth (see also How far is Comet 19P/Borrelly from Earth?)
- When does Comet 19P/Borrelly rise and set?
- Brightness (see also How bright is Comet 19P/Borrelly?)
- Orbital elements. Detailed information about Comet 19P/Borrelly orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Comet 19P/Borrelly with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet 19P/Borrelly for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet 19P/Borrelly in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet 19P/Borrelly with your telescope or on your astrophotographies.