Comet 19P/Borrelly
Comet 19P/Borrelly is in the constellation of
Ophiuchus,
at a distance of
Finder Charts
View interactive star map
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.
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.
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 2000 and 31 December 2099, the closest approach of Comet 19P/Borrelly to Earth happens on Wed Dec 6 2028 at a distance of 0.412670 Astronomical Units, or 61,734,601 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 05 March 2021 00:00 UTC (JD: 2459279.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.63791428 |
| Orbit inclination | i | 29.31866223° |
| Perihelion distance | q | 1.30603039 AU 195,379,366 km |
| Aphelion distance | Q |
5.90789896 AU 883,809,107 km |
| Semi-major axis | a |
3.60696468 AU 539,594,237 km |
| Orbital period | period |
6.8505 years 2,502.1380 days |
| Date of perihelion transit | Tp | 2022-Feb-01 18:20:15 2,459,612.2641 JD |
| Next perihelion transit | 2028-Dec-08 21:38 2,462,114.4021 JD |
|
| Argument of perihelion | peri | 351.86160719585° |
| Longitude of the ascending node | node | 74.300843098016° |
| Mean anomaly | M | 312.12291943143° |
| Mean motion | n | 0.14387696°/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 |
|---|---|---|---|---|
| 2025 Apr 05 | 16h 47m 08s | -15° 52’ 45” | 24.58 | Ophiuchus |
| 2025 Apr 06 | 16h 46m 53s | -15° 52’ 36” | 24.57 | Ophiuchus |
| 2025 Apr 07 | 16h 46m 37s | -15° 52’ 27” | 24.57 | Ophiuchus |
| 2025 Apr 08 | 16h 46m 20s | -15° 52’ 17” | 24.56 | Ophiuchus |
| 2025 Apr 09 | 16h 46m 02s | -15° 52’ 07” | 24.56 | Ophiuchus |
| 2025 Apr 10 | 16h 45m 44s | -15° 51’ 57” | 24.55 | Ophiuchus |
| 2025 Apr 11 | 16h 45m 25s | -15° 51’ 45” | 24.55 | Ophiuchus |
| 2025 Apr 12 | 16h 45m 05s | -15° 51’ 34” | 24.54 | Ophiuchus |
| 2025 Apr 13 | 16h 44m 45s | -15° 51’ 22” | 24.54 | Ophiuchus |
| 2025 Apr 14 | 16h 44m 24s | -15° 51’ 09” | 24.53 | Ophiuchus |
| 2025 Apr 15 | 16h 44m 02s | -15° 50’ 56” | 24.53 | Ophiuchus |
| 2025 Apr 16 | 16h 43m 39s | -15° 50’ 43” | 24.53 | Ophiuchus |
| 2025 Apr 17 | 16h 43m 16s | -15° 50’ 29” | 24.52 | Ophiuchus |
| 2025 Apr 18 | 16h 42m 52s | -15° 50’ 15” | 24.52 | Ophiuchus |
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.