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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:51 
Transit: 13:04 
Sunset: 21:17
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Dwarf Planets and Asteroids » 

Asteroid 2012 TC4

Below the horizon.  Rise: 18:50 | Tran: 22:40 | Set: 2:35
Alt: -41.00°   Az: 285.29°   Direction: West-North-West

Asteroid 2012 TC4 is in the constellation of Ophiuchus, at a distance of 154,503,005.0 kilometers from Earth. The current Right Ascension is 16h 33m 50s and the Declination is -22° 54’ 50” (apparent coordinates). The magnitude of asteroid 2012 TC4 is 29.12.

Finder Charts

The sky charts below show, at different resolutions, the position of asteroid 2012 TC4 in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of asteroid 2012 TC4 in the constellation of Ophiuchus on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of asteroid 2012 TC4 in the constellation of Ophiuchus 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 asteroid 2012 TC4 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.

2012 TC4
RA: 16h 32m 18s
Dec: -22° 51’ 40”
Simplified high-resolution deep sky chart showing the current position of asteroid 2012 TC4. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

16h 33m 50s
-22° 54’ 50”
08h 31m 07s
01h 04m 57s

J2000

16h 32m 18s
-22° 51’ 40”

Additional Information

Ophiuchus
29.12

Rise and Set Times

The following table lists today's rise, transit and set times of asteroid 2012 TC4 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 112.9°
Max altitude: 15.6°
Azimuth: 247.1°

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 asteroid 2012 TC4 from Earth is currently 154,503,005.0 kilometers, equivalent to 1.0327887976 Astronomical Units. Light takes 8m 35.367s to travel from asteroid 2012 TC4 and arrive to us.

154,503,005.0
1.0327887976
8m 35.367s

The following graph shows the distance of asteroid 2012 TC4 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 asteroid 2012 TC4 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 2012 TC4 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 asteroid 2012 TC4 to Earth happened on Thursday 12 October 2017 at a distance of 0.001009 Astronomical Units, or 150,903 kilometers:

Thursday 12 October 2017
150,903
0.001009

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 asteroid 2012 TC4, 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 asteroid 2012 TC4 as a function of time

Orbital Elements

The following table lists the orbital elements of asteroid 2012 TC4 at epoch October, 16 2024 00:00 UTC (JD: 2460600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.40390922
Orbit inclination i 0.53443475°
Perihelion distance q 0.96591057 AU
144,498,165 km
Aphelion distance Q 2.27490644 AU
340,321,160 km
Semi-major axis a 1.62040850 AU
242,409,662 km
Orbital period period 2.0627 years
753.4166 days
Date of perihelion transit Tp January 11, 2024
2,460,321.4101 JD
Next perihelion transit February 3, 2026
2,461,074.8267 JD
Argument of perihelion peri 26.54887567949°
Longitude of the ascending node node 19.70834489237°
Mean anomaly M 133.3556410329°
Mean motion n 0.47782328°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of asteroid 2012 TC4 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 asteroid 2012 TC4 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 16h 44m 24s -23° 15’ 36” 28.96 Ophiuchus
Jun 28 2025 16h 42m 50s -23° 12’ 45” 28.98 Ophiuchus
Jun 29 2025 16h 41m 19s -23° 09’ 53” 29.00 Ophiuchus
Jun 30 2025 16h 39m 49s -23° 07’ 00” 29.03 Ophiuchus
Jul 01 2025 16h 38m 21s -23° 04’ 08” 29.05 Ophiuchus
Jul 02 2025 16h 36m 55s -23° 01’ 16” 29.07 Ophiuchus
Jul 03 2025 16h 35m 32s -22° 58’ 24” 29.09 Ophiuchus
Jul 04 2025 16h 34m 11s -22° 55’ 34” 29.11 Ophiuchus
Jul 05 2025 16h 32m 52s -22° 52’ 45” 29.14 Ophiuchus
Jul 06 2025 16h 31m 35s -22° 49’ 57” 29.16 Ophiuchus
Jul 07 2025 16h 30m 21s -22° 47’ 13” 29.18 Ophiuchus
Jul 08 2025 16h 29m 10s -22° 44’ 30” 29.20 Ophiuchus
Jul 09 2025 16h 28m 01s -22° 41’ 51” 29.22 Ophiuchus
Jul 10 2025 16h 26m 55s -22° 39’ 14” 29.24 Ophiuchus

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