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Comets » 

Comet 310P/Hill

Above the horizon.  Rise: 16:16 | Tran: 0:35 | Set: 8:49
Alt: 5.51°   Az: 57.42°   Direction: East-North-East

Comet 310P/Hill is in the constellation of Leo, at a distance of 430,491,635.0 kilometers from Earth. The current Right Ascension is 10h 11m 43s and the Declination is +24° 08’ 09” (apparent coordinates). The predicted magnitude of Comet 310P/Hill is 22.88 (data provided by JPL Horizons).

Finder Charts

Map showing Comet 310P/Hill in Leo on February, 14 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet 310P/Hill in Leo on February, 14 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet 310P/Hill is right now. Click on the image to see a more detailed fullscreen tracker view.

310P/Hill
RA: 10h 10m 19s
Dec: +24° 15’ 37”
Deep sky finder chart for Comet 310P/Hill. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet 310P/Hill?, a page that provides all the information needed to find Comet 310P/Hill in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

10h 11m 43s
+24° 08’ 09”
16h 27m 10s
02h 38m 53s

J2000

10h 10m 19s
+24° 15’ 37”

Additional Information

Leo
n/a
n/a
n/a
n/a
22.88

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 310P/Hill from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 65.9°
Max altitude: 62.6°
Azimuth: 294.1°
  • 310P/Hill is above the horizon from Greenwich, UK.
  • Right now it is placed in the East-North-East direction at an altitude of 5.51° above the horizon.
  • Given its current magnitude, 310P/Hill 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 310P/Hill from Earth is currently 430,491,635.0 kilometers, equivalent to 2.8776588396 Astronomical Units. Light takes 23m 55.966s to travel from Comet 310P/Hill and arrive to us.

430,491,635.0
2.8776588396
23m 55.966s

The following chart shows the distance of Comet 310P/Hill 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 310P/Hill 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 310P/Hill 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 310P/Hill to Earth happens on Thu Oct 22 2065 at a distance of 1.280591 Astronomical Units, or 191,573,654 kilometers:

Thu Oct 22 2065
191,573,654
1.280591

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 310P/Hill, 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 310P/Hill as a function of time

Orbital Elements

The following table lists the orbital elements of Comet 310P/Hill at epoch 11 May 2009 00:00 UTC (JD: 2454963.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.42511062
Orbit inclination i 13.18546593°
Perihelion distance q 2.39441496 AU
358,199,381 km
Aphelion distance Q 5.93558741 AU
887,951,239 km
Semi-major axis a 4.16500119 AU
623,075,310 km
Orbital period period 8.5002 years
3,104.7106 days
Date of perihelion transit Tp 2006-Oct-18 10:48:39
2,454,026.9505 JD
Next perihelion transit 2015-Apr-19 03:51
2,457,131.6610 JD
Argument of perihelion peri 31.170214383807°
Longitude of the ascending node node 9.0395608141657°
Mean anomaly M 108.59557718994°
Mean motion n 0.11595284°/day

Orbit Visualization

15 Days Ephemeris

The following table lists the ephemerides of Comet 310P/Hill 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 Feb 07 10h 17m 49s +23° 48’ 04” 22.81 Leo
2025 Feb 08 10h 17m 02s +23° 50’ 56” 22.82 Leo
2025 Feb 09 10h 16m 15s +23° 53’ 44” 22.83 Leo
2025 Feb 10 10h 15m 29s +23° 56’ 27” 22.84 Leo
2025 Feb 11 10h 14m 41s +23° 59’ 05” 22.84 Leo
2025 Feb 12 10h 13m 53s +24° 01’ 39” 22.85 Leo
2025 Feb 13 10h 13m 05s +24° 04’ 08” 22.86 Leo
2025 Feb 14 10h 12m 17s +24° 06’ 31” 22.87 Leo
2025 Feb 15 10h 11m 29s +24° 08’ 50” 22.88 Leo
2025 Feb 16 10h 10m 41s +24° 11’ 02” 22.89 Leo
2025 Feb 17 10h 09m 53s +24° 13’ 09” 22.90 Leo
2025 Feb 18 10h 09m 05s +24° 15’ 10” 22.91 Leo
2025 Feb 19 10h 08m 17s +24° 17’ 06” 22.92 Leo
2025 Feb 20 10h 07m 30s +24° 18’ 55” 22.93 Leo

Additional Resources