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public  Lexington-Fayette, United States Lexington-Fayette, United S...  ⓘ
TimezoneAmerica/New_York
Sunrise: 6:16 
Transit: 13:39 
Sunset: 21:02
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Comets » 

Southern Comet (C/1947 X1-A)

Above the horizon.  Rise: 23:44 | Tran: 5:29 | Set: 11:15
Alt: 20.79°   Az: 246.75°   Direction: South-South-West

Southern Comet (C/1947 X1-A) is in the constellation of Aquarius, at a distance of 14,802,356,963.0 kilometers from Earth. The current Right Ascension is 21h 51m 30s and the Declination is -04° 07’ 03” (apparent coordinates).

Finder Charts

Map showing Southern Comet (C/1947 X1-A) in Aquarius on June, 21 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Southern Comet (C/1947 X1-A) in Aquarius on June, 21 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Southern Comet (C/1947 X1-A) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/1947 X1-A (Southern Comet)
RA: 21h 50m 10s
Dec: -04° 14’ 15”
Deep sky finder chart for Southern Comet (C/1947 X1-A). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Southern Comet (C/1947 X1-A)?, a page that provides all the information needed to find Southern Comet (C/1947 X1-A) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

21h 51m 30s
-04° 07’ 03”
03h 57m 47s
01h 49m 17s

J2000

21h 50m 10s
-04° 14’ 15”

Additional Information

Aquarius
n/a
n/a
n/a
n/a
-

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 Southern Comet (C/1947 X1-A) from Lexington-Fayette, United States (all times relative to the local timezone America/New_York):

Azimuth: 94.1°
Max altitude: 47.8°
Azimuth: 265.9°

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 Southern Comet (C/1947 X1-A) from Earth is currently 14,802,356,963.0 kilometers, equivalent to 98.9476447341 Astronomical Units. Light takes 13h 42m 55.348s to travel from Southern Comet (C/1947 X1-A) and arrive to us.

14,802,356,963.0
98.9476447341
13h 42m 55.348s

The following chart shows the distance of Southern Comet (C/1947 X1-A) 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 Southern Comet (C/1947 X1-A) 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 C/1947 X1-A (Southern Comet) 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 Southern Comet (C/1947 X1-A) to Earth happens on Mon Aug 12 2013 at a distance of 88.311242 Astronomical Units, or 13,211,173,795 kilometers:

Mon Aug 12 2013
13,211,173,795
88.311242

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

Light Curve

Orbital Elements

The following table lists the orbital elements of Southern Comet (C/1947 X1-A) at epoch 01 January 1970 00:00 UTC (JD: 2432538.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99984292
Orbit inclination i 138.51137649°
Perihelion distance q 0.11000471 AU
16,456,470 km
Aphelion distance Q 1,400.47396976 AU
209,507,924,267 km
Semi-major axis a 700.29198723 AU
104,762,190,368 km
Orbital period period 18,532.1983 years
6,768,885.4193 days
Date of perihelion transit Tp 1947-Dec-02 14:04:30
2,432,522.0865 JD
Next perihelion transit 20480-Jun-30 00:08
9,201,407.5058 JD
Argument of perihelion peri 196.18205692517°
Longitude of the ascending node node 337.31152850504°
Mean anomaly M 0.00087294596831845°
Mean motion n 0.00005318°/day
2h1>Orbit Visualization
Orbit Diagram of Southern Comet (C/1947 X1-A)
View Southern Comet (C/1947 X1-A) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Southern Comet (C/1947 X1-A) 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 Jun 14 21h 51m 38s -04° 06’ 54” N.A. Aquarius
2025 Jun 15 21h 51m 37s -04° 06’ 54” N.A. Aquarius
2025 Jun 16 21h 51m 36s -04° 06’ 55” N.A. Aquarius
2025 Jun 17 21h 51m 35s -04° 06’ 56” N.A. Aquarius
2025 Jun 18 21h 51m 34s -04° 06’ 57” N.A. Aquarius
2025 Jun 19 21h 51m 32s -04° 06’ 59” N.A. Aquarius
2025 Jun 20 21h 51m 31s -04° 07’ 00” N.A. Aquarius
2025 Jun 21 21h 51m 30s -04° 07’ 02” N.A. Aquarius
2025 Jun 22 21h 51m 29s -04° 07’ 04” N.A. Aquarius
2025 Jun 23 21h 51m 27s -04° 07’ 07” N.A. Aquarius
2025 Jun 24 21h 51m 26s -04° 07’ 09” N.A. Aquarius
2025 Jun 25 21h 51m 25s -04° 07’ 12” N.A. Aquarius
2025 Jun 26 21h 51m 23s -04° 07’ 15” N.A. Aquarius
2025 Jun 27 21h 51m 22s -04° 07’ 18” N.A. Aquarius

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