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Comets » 

Comet 354P/LINEAR

Below the horizon.  Rise: 4:44 | Tran: 7:59 | Set: 11:15
Alt: -53.09°   Az: 295.85°   Direction: West-North-West

Comet 354P/LINEAR is in the constellation of Ophiuchus, at a distance of 427,146,844.0 kilometers from Earth. The current Right Ascension is 17h 11m 16s and the Declination is -27° 32’ 57” (apparent coordinates). The predicted magnitude of Comet 354P/LINEAR is 21.78 (data provided by JPL Horizons).

Finder Charts

Map showing Comet 354P/LINEAR in Ophiuchus on February, 07 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet 354P/LINEAR in Ophiuchus on February, 07 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet 354P/LINEAR is right now. Click on the image to see a more detailed fullscreen tracker view.

354P/LINEAR
RA: 17h 09m 42s
Dec: -27° 31’ 09”
Deep sky finder chart for Comet 354P/LINEAR. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet 354P/LINEAR?, a page that provides all the information needed to find Comet 354P/LINEAR in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

17h 11m 16s
-27° 32’ 57”
09h 29m 46s
02h 41m 02s

J2000

17h 09m 42s
-27° 31’ 09”

Additional Information

Ophiuchus
n/a
n/a
n/a
n/a
21.78

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 354P/LINEAR from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 117.5°
Max altitude: 11.0°
Azimuth: 242.5°
  • 354P/LINEAR is below the horizon from Greenwich, UK.
  • Given its current magnitude, 354P/LINEAR 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 354P/LINEAR from Earth is currently 427,146,844.0 kilometers, equivalent to 2.8553002927 Astronomical Units. Light takes 23m 44.809s to travel from Comet 354P/LINEAR and arrive to us.

427,146,844.0
2.8553002927
23m 44.809s

The following chart shows the distance of Comet 354P/LINEAR 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 Comet 354P/LINEAR 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 354P/LINEAR 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 354P/LINEAR to Earth happens on Mon Dec 28 2054 at a distance of 1.023462 Astronomical Units, or 153,107,675 kilometers:

Mon Dec 28 2054
153,107,675
1.023462

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 354P/LINEAR, 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 Comet 354P/LINEAR as a function of time

Orbital Elements

The following table lists the orbital elements of Comet 354P/LINEAR at epoch 11 January 2014 00:00 UTC (JD: 2456669.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.12497107
Orbit inclination i 5.25593231°
Perihelion distance q 2.00355966 AU
299,728,259 km
Aphelion distance Q 2.57585386 AU
385,342,254 km
Semi-major axis a 2.28970676 AU
342,535,256 km
Orbital period period 3.4648 years
1,265.5177 days
Date of perihelion transit Tp 2013-May-22 00:04:05
2,456,434.5028 JD
Next perihelion transit 2016-Nov-07 12:29
2,457,700.0206 JD
Argument of perihelion peri 132.74246731196°
Longitude of the ascending node node 320.23521080286°
Mean anomaly M 66.849301797413°
Mean motion n 0.28446856°/day

Orbit Visualization

Orbit Diagram of Comet 354P/LINEAR
View Comet 354P/LINEAR in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Comet 354P/LINEAR 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 Jan 31 16h 58m 21s -27° 09’ 27” 21.83 Ophiuchus
2025 Feb 01 17h 00m 03s -27° 12’ 44” 21.83 Ophiuchus
2025 Feb 02 17h 01m 44s -27° 15’ 55” 21.82 Ophiuchus
2025 Feb 03 17h 03m 25s -27° 19’ 03” 21.81 Ophiuchus
2025 Feb 04 17h 05m 06s -27° 22’ 07” 21.81 Ophiuchus
2025 Feb 05 17h 06m 47s -27° 25’ 06” 21.80 Ophiuchus
2025 Feb 06 17h 08m 26s -27° 28’ 03” 21.79 Ophiuchus
2025 Feb 07 17h 10m 05s -27° 30’ 54” 21.79 Ophiuchus
2025 Feb 08 17h 11m 43s -27° 33’ 43” 21.78 Ophiuchus
2025 Feb 09 17h 13m 21s -27° 36’ 27” 21.77 Ophiuchus
2025 Feb 10 17h 14m 59s -27° 39’ 09” 21.77 Ophiuchus
2025 Feb 11 17h 16m 35s -27° 41’ 45” 21.76 Ophiuchus
2025 Feb 12 17h 18m 12s -27° 44’ 19” 21.75 Ophiuchus
2025 Feb 13 17h 19m 47s -27° 46’ 49” 21.75 Ophiuchus

Additional Resources