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public  Quanjiang, China Quanjiang, China  ⓘ
TimezoneAsia/Shanghai
Sunrise: 5:35 
Transit: 12:26 
Sunset: 19:17
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Comets » 

Comet 150P/LONEOS

Above the horizon.  Rise: 19:08 | Tran: 0:30 | Set: 5:52
Alt: 30.60°   Az: 133.04°   Direction: South-East

Comet 150P/LONEOS is in the constellation of Sagittarius, at a distance of 446,415,883.0 kilometers from Earth. The current Right Ascension is 19h 00m 15s and the Declination is -17° 30’ 57” (apparent coordinates). The estimated magnitude of comet 150P/LONEOS, computed using JPL Horizons's data, is 20.98).

Finder Charts

The sky charts below show, at different resolutions, the position of comet 150P/LONEOS in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet 150P/LONEOS in the constellation of Sagittarius on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet 150P/LONEOS in the constellation of Sagittarius on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet 150P/LONEOS against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

150P/LONEOS
RA: 18h 58m 46s
Dec: -17° 33’ 08”
Simplified high-resolution deep sky chart showing the current position of comet 150P/LONEOS. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

19h 00m 15s
-17° 30’ 57”
21h 14m 53s
16h 15m 09s

J2000

18h 58m 46s
-17° 33’ 08”

Additional Information

Sagittarius
n/a
n/a
n/a
n/a
20.98

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

The following table lists today's rise, transit and set times of comet 150P/LONEOS from Quanjiang, China (all times relative to the local timezone Asia/Shanghai):

Azimuth: 107.5°
Max altitude: 46.2°
Azimuth: 252.5°

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 150P/LONEOS from Earth is currently 446,415,883.0 kilometers, equivalent to 2.9841058627 Astronomical Units. Light takes 24m 49.083s to travel from comet 150P/LONEOS and arrive to us.

446,415,883.0
2.9841058627
24m 49.083s

The following graph shows the distance of comet 150P/LONEOS from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet 150P/LONEOS from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of 150P/LONEOS from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet 150P/LONEOS to Earth happened on Wednesday 14 February 2024 at a distance of 0.847467 Astronomical Units, or 126,779,305 kilometers:

Wednesday 14 February 2024
126,779,305
0.847467

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

Light Curve

The following chart shows the light curve of comet 150P/LONEOS, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of comet 150P/LONEOS as a function of time

Orbital Elements

The following table lists the orbital elements of comet 150P/LONEOS at epoch July, 23 2019 00:00 UTC (JD: 2458688.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.54650135
Orbit inclination i 18.50821797°
Perihelion distance q 1.75982625 AU
263,266,261 km
Aphelion distance Q 6.00128286 AU
897,779,139 km
Semi-major axis a 3.88055456 AU
580,522,700 km
Orbital period period 7.6445 years
2,792.1524 days
Date of perihelion transit Tp July 24, 2016
2,457,593.7880 JD
Next perihelion transit March 16, 2024
2,460,385.9404 JD
Argument of perihelion peri 245.61501922492°
Longitude of the ascending node node 272.40798272251°
Mean anomaly M 141.1442778425°
Mean motion n 0.12893279°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet 150P/LONEOS relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

15 Days Ephemeris

The following table lists the ephemerides of comet 150P/LONEOS 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
Jun 27 2025 19h 06m 36s -17° 40’ 48” 20.95 Sagittarius
Jun 28 2025 19h 05m 46s -17° 39’ 26” 20.95 Sagittarius
Jun 29 2025 19h 04m 55s -17° 38’ 05” 20.96 Sagittarius
Jun 30 2025 19h 04m 05s -17° 36’ 46” 20.96 Sagittarius
Jul 01 2025 19h 03m 15s -17° 35’ 27” 20.96 Sagittarius
Jul 02 2025 19h 02m 24s -17° 34’ 09” 20.97 Sagittarius
Jul 03 2025 19h 01m 34s -17° 32’ 53” 20.97 Sagittarius
Jul 04 2025 19h 00m 43s -17° 31’ 39” 20.98 Sagittarius
Jul 05 2025 18h 59m 53s -17° 30’ 26” 20.98 Sagittarius
Jul 06 2025 18h 59m 03s -17° 29’ 13” 20.99 Sagittarius
Jul 07 2025 18h 58m 13s -17° 28’ 01” 21.00 Sagittarius
Jul 08 2025 18h 57m 24s -17° 26’ 52” 21.00 Sagittarius
Jul 09 2025 18h 56m 34s -17° 25’ 43” 21.01 Sagittarius
Jul 10 2025 18h 55m 45s -17° 24’ 36” 21.01 Sagittarius

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