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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
sunny DaytimeWhat's Visible Now?
Comets » 

5D/Brorsen (Lost)

Altitude: -10.5°   Azimuth: 248.1°   Direction: West-South-West

Comet 5D/Brorsen, also known as Comet Brorsen, was a periodic comet belonging to the Jupiter family of comets, which is now considered a lost comet. It was first discovered by the Danish astronomer Theodor Brorsen on February 26, 1846. Based on the collected observations, the comet had an orbital period of 5.46 years and traveled around the Sun in an eccentric orbit with the closest approach to the Sun (perihelion) at a distance of about 0.58 astronomical units (AU), and the farthest distance (aphelion) at around 5.6 AU. The latest successful observations of Comet 5D/Brorsen were conducted during the 1879 apparition, while it was not possible to find the comet again during any of the subsequent apparitions.

5D/Brorsen (Lost) is currently in the constellation of Sagittarius, at a distance of 661,126,506 kilometers from Earth.

Finder chart of 5D/Brorsen (Lost) in Sagittarius on February,28 2024
Map showing 5D/Brorsen (Lost) in Sagittarius on February, 28 2024. Field of view: 50x30 degrees
View interactive star map
The current Right Ascension of 5D/Brorsen (Lost) is 18h 56m 21s and the Declination is -21° 49’ 10” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of 5D/Brorsen (Lost) is 17.50 (JPL).

18h 56m 21s
-21° 49’ 10”

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.

Today's rise, transit and set times of 5D/Brorsen (Lost) from Greenwich, United Kingdom edit_location_alt (all times relative to the local timezone Europe/London):

Azimuth: 111.8°
Max altitude: 16.7°
Azimuth: 248.2°
  • 5D/Brorsen (Lost) is below the horizon from Greenwich, United Kingdom edit_location_alt.
  • Given its current magnitude, 5D/Brorsen (Lost) 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.

Additional Resources

5D/Brorsen (Lost) Position and Finder Charts

Finder chart of 5D/Brorsen (Lost)
Map showing 5D/Brorsen (Lost) in Sagittarius on February, 28 2024
Field of view: 10x6 degrees
View fullscreen

Higher precision deep sky finder chart, 60 arcmin wide, showing where 5D/Brorsen (Lost) is right now. Click on the image to see a more detailed fullscreen tracker view.

5D/Brorsen (Lost)
RA: 18h 56m 21s
Dec: -21° 49’ 10”
Deep sky finder chart for 5D/Brorsen (Lost)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is 5D/Brorsen (Lost)?, a page that provides all the information needed to find 5D/Brorsen (Lost) in the sky and additional links to sky charts.

5D/Brorsen (Lost) Distance from Earth

The distance of 5D/Brorsen (Lost) from Earth is currently 661,126,506 kilometers, equivalent to 4.419358 Astronomical Units. Light takes 36 minutes and 45.2806 seconds to travel from 5D/Brorsen (Lost) and arrive to us.

36 minutes and 45.2806 seconds

The following chart shows the distance of 5D/Brorsen (Lost) 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.

Chart of the distance of 5D/Brorsen (Lost) from Earth in Astronomical Units (au)

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 5D/Brorsen (Lost) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of 5D/Brorsen (Lost) to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of 5D/Brorsen (Lost) to Earth happens on Tue Oct 26 2083 at a distance of 0.259836 Astronomical Units, or 38,870,982 kilometers:

Tue Oct 26 2083

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

5D/Brorsen (Lost) Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of 5D/Brorsen (Lost), 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.

Chart of the magnitude of 5D/Brorsen (Lost) as a function of time

5D/Brorsen (Lost) Orbital Elements

The following table lists the orbital elements of 5D/Brorsen (Lost) at epoch 01 January 1970 00:00 UTC (JD: 2407440.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.80979600
Orbit inclination i 29.38210000°
Perihelion distance q 0.58984700 AU
88,239,855 km
Aphelion distance Q 5.61240952 AU
839,604,516 km
Semi-major axis a 3.10112826 AU
463,922,186 km
Orbital period period 5.4612 years
1,994.7020 days
Date of perihelion transit Tp 1879-Mar-31 00:49:06
2,407,439.5341 JD
Next perihelion transit 1884-Sep-14 17:39
2,409,434.2361 JD
Argument of perihelion peri 14.9468°
Longitude of the ascending node node 102.9676°
Mean anomaly M 0.17432378482129°
Mean motion n 0.18047809°/day

Visualization of 5D/Brorsen (Lost) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of 5D/Brorsen (Lost) with respect of the Sun and the orbits of the major planets. The position of 5D/Brorsen (Lost) 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 5D/Brorsen (Lost)
View 5D/Brorsen (Lost) in the 3D Solar System Simulator

5D/Brorsen (Lost) 15 Days Ephemeris

The following table lists the ephemerides of 5D/Brorsen (Lost) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate 5D/Brorsen (Lost) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2024 Feb 21 18h 50m 44s -21° 49’ 49” 17.47 Sagittarius
2024 Feb 22 18h 51m 29s -21° 49’ 44” 17.47 Sagittarius
2024 Feb 23 18h 52m 17s -21° 49’ 37” 17.48 Sagittarius
2024 Feb 24 18h 53m 02s -21° 49’ 32” 17.48 Sagittarius
2024 Feb 25 18h 53m 47s -21° 49’ 27” 17.48 Sagittarius
2024 Feb 26 18h 54m 32s -21° 49’ 22” 17.49 Sagittarius
2024 Feb 27 18h 55m 14s -21° 49’ 17” 17.49 Sagittarius
2024 Feb 28 18h 55m 58s -21° 49’ 12” 17.49 Sagittarius
2024 Feb 29 18h 56m 39s -21° 49’ 06” 17.50 Sagittarius
2024 Mar 01 18h 57m 21s -21° 49’ 02” 17.50 Sagittarius
2024 Mar 02 18h 58m 03s -21° 48’ 59” 17.50 Sagittarius
2024 Mar 03 18h 58m 42s -21° 48’ 55” 17.51 Sagittarius
2024 Mar 04 18h 59m 22s -21° 48’ 51” 17.51 Sagittarius
2024 Mar 05 19h 00m 02s -21° 48’ 48” 17.51 Sagittarius