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🌎 Location: Greenwich, United Kingdom [change]

Asteroid (NEO) 2017 SE12

Asteroid (NEO) 2017 SE12 is a Near Earth Object. If you've heard news about a potential impact of this asteroid with the Earth, please check out Will Asteroid Asteroid (NEO) 2017 SE12 Impact Earth?.

Asteroid (NEO) 2017 SE12 is currently in the constellation of Sagittarius. The current Right Ascension of Asteroid (NEO) 2017 SE12 is 19h 24m 49s and the Declination is -20° 36’ 21” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2017 SE12 is 28.62 (JPL).

Summary of key facts about Asteroid (NEO) 2017 SE12 [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

19h 24m 49s
-20° 36’ 21”
  • 2017 SE12 is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-South-East direction at an altitude of 16° above the horizon.
  • Given its current magnitude, 2017 SE12 is visible only through long exposure photography.
  • See also 2017 SE12 rise and set times.
  • 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.

Additional information about Asteroid (NEO) 2017 SE12 available on TheSkyLive:

Available Resources

Asteroid (NEO) 2017 SE12 Position and Finder Charts

Below we provide Asteroid (NEO) 2017 SE12 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid (NEO) 2017 SE12 in Sagittarius on January, 24 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2017 SE12 in Sagittarius on January, 24 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Also check out Where is Asteroid (NEO) 2017 SE12?, a page that provides all the information needed to find Asteroid (NEO) 2017 SE12 in the sky and additional links to sky charts.

Asteroid (NEO) 2017 SE12 Distance from Earth

The distance of Asteroid (NEO) 2017 SE12 from Earth is currently 260,789,432 kilometers, equivalent to 1.743270 Astronomical Units. Light takes 14 minutes and 29.8999 seconds to travel from Asteroid (NEO) 2017 SE12 and arrive to us.

14 minutes and 29.8999 seconds

The following chart shows the distance of Asteroid (NEO) 2017 SE12 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.

Distance of Asteroid (NEO) 2017 SE12 from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth.

Closest approach of Asteroid (NEO) 2017 SE12 to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2017 SE12 to Earth happens on Thu Mar 30 2023 at a distance of 0.011852 Astronomical Units, or 1,772,984 kilometers:

Thu Mar 30 2023

Asteroid (NEO) 2017 SE12 brightness

The current visual magnitude of Asteroid (NEO) 2017 SE12 is 28.62.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2017 SE12, 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.

Predicted magnitude of Asteroid (NEO) 2017 SE12 between January 2013 and December 2100

Asteroid (NEO) 2017 SE12 rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid (NEO) 2017 SE12 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.6°
Max altitude: 17.9°
Azimuth: 249.4°

The rise and set times are defined as the time at which the upper limb of Asteroid (NEO) 2017 SE12 touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid (NEO) 2017 SE12 Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2017 SE12 at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.25658875
Orbit inclination i 2.92000514°
Perihelion distance q 0.82867387 AU
123,967,847 km
Aphelion distance Q 1.40070824 AU
209,542,970 km
Semi-major axis a 1.11469105 AU
166,755,409 km
Orbital period period 1.1800 years
429.8631 days
Date of perihelion transit Tp 2019-Nov-20 03:57:20
2,458,807.6648 JD
Next perihelion transit 2021-Jan-23 00:40
2,459,237.5280 JD
Argument of perihelion peri 88.373842288659°
Longitude of the ascending node node 182.06179326955°
Mean anomaly M 161.49480526019°
Mean motion n 0.83747587°/day

Visualization of Asteroid (NEO) 2017 SE12 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid (NEO) 2017 SE12 with respect of the Sun and the orbits of the major planets. The position of Asteroid (NEO) 2017 SE12 and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid (NEO) 2017 SE12
View Asteroid (NEO) 2017 SE12 in the 3D Solar System Simulator

Asteroid (NEO) 2017 SE12 15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2017 SE12 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid (NEO) 2017 SE12 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 17 18h 46m 13s -21° 37’ 45” 28.66 Sagittarius
2021 Jan 18 18h 51m 28s -21° 31’ 22” 28.65 Sagittarius
2021 Jan 19 18h 56m 43s -21° 24’ 20” 28.65 Sagittarius
2021 Jan 20 19h 01m 56s -21° 16’ 44” 28.64 Sagittarius
2021 Jan 21 19h 07m 09s -21° 08’ 31” 28.63 Sagittarius
2021 Jan 22 19h 12m 21s -20° 59’ 44” 28.63 Sagittarius
2021 Jan 23 19h 17m 33s -20° 50’ 22” 28.62 Sagittarius
2021 Jan 24 19h 22m 44s -20° 40’ 27” 28.62 Sagittarius
2021 Jan 25 19h 27m 52s -20° 29’ 58” 28.61 Sagittarius
2021 Jan 26 19h 33m 01s -20° 18’ 56” 28.61 Sagittarius
2021 Jan 27 19h 38m 08s -20° 07’ 23” 28.60 Sagittarius
2021 Jan 28 19h 43m 14s -19° 55’ 18” 28.60 Sagittarius
2021 Jan 29 19h 48m 19s -19° 42’ 41” 28.60 Sagittarius
2021 Jan 30 19h 53m 22s -19° 29’ 35” 28.59 Sagittarius