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🌎  Greenwich, United Kingdom [change]

Asteroid 2018 AJ

Asteroid 2018 AJ is currently in the constellation of Sagittarius. The current Right Ascension of Asteroid 2018 AJ is 19h 37m 39s and the Declination is -22° 40’ 44” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 2018 AJ is 28.33 (JPL).

Summary of key facts about Asteroid 2018 AJ [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 37m 39s
-22° 40’ 44”
  • 2018 AJ is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-South-East direction at an altitude of 15° above the horizon.
  • Given its current magnitude, 2018 AJ is visible only through long exposure photography.
  • See also 2018 AJ 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 2018 AJ available on TheSkyLive:

Available Resources

Asteroid 2018 AJ Position and Finder Charts

Below we provide Asteroid 2018 AJ 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 2018 AJ in Sagittarius on January, 24 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 2018 AJ in Sagittarius on January, 24 2022
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]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 2018 AJ is right now. Click on the image to see a more detailed fullscreen tracker view.

2018 AJ
RA: 19h 37m 39s
Dec: -22° 40’ 44”
Deep sky finder chart for Asteroid 2018 AJ
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 2018 AJ?, a page that provides all the information needed to find Asteroid 2018 AJ in the sky and additional links to sky charts.

Asteroid 2018 AJ Distance from Earth

The distance of Asteroid 2018 AJ from Earth is currently 401,358,257 kilometers, equivalent to 2.682914 Astronomical Units. Light takes 22 minutes and 18.7870 seconds to travel from Asteroid 2018 AJ and arrive to us.

22 minutes and 18.7870 seconds

The following chart shows the distance of Asteroid 2018 AJ 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 2018 AJ 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. The value of the distance of 2018 AJ from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 2018 AJ to Earth

Between January 2013 and December 2100, the closest approach of Asteroid 2018 AJ to Earth happens on Wed Jan 24 2018 at a distance of 0.012035 Astronomical Units, or 1,800,431 kilometers:

Wed Jan 24 2018

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

Asteroid 2018 AJ brightness

The current visual magnitude of Asteroid 2018 AJ is 28.33.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 2018 AJ, 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 2018 AJ between January 2013 and December 2100

Asteroid 2018 AJ 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 2018 AJ rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.7°
Max altitude: 15.8°
Azimuth: 247.3°

The rise and set times are defined as the time at which the upper limb of Asteroid 2018 AJ 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 2018 AJ Orbital Elements

The following table lists the orbital elements of Asteroid 2018 AJ at epoch 20 January 2022 00:00 UTC (JD: 2459600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.30649305
Orbit inclination i 5.66836538°
Perihelion distance q 0.98518258 AU
147,381,216 km
Aphelion distance Q 1.85597878 AU
277,650,475 km
Semi-major axis a 1.42058068 AU
212,515,845 km
Orbital period period 1.6932 years
618.4396 days
Date of perihelion transit Tp 2021-Jun-26 23:03:35
2,459,392.4608 JD
Next perihelion transit 2023-Mar-07 09:36
2,460,010.9004 JD
Argument of perihelion peri 195.38324248603°
Longitude of the ascending node node 303.60777258956°
Mean anomaly M 121.10172665498°
Mean motion n 0.58211021°/day

Visualization of Asteroid 2018 AJ Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 2018 AJ with respect of the Sun and the orbits of the major planets. The position of Asteroid 2018 AJ 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 2018 AJ
View Asteroid 2018 AJ in the 3D Solar System Simulator

Asteroid 2018 AJ 15 Days Ephemeris

The following table lists the ephemerides of Asteroid 2018 AJ computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 2018 AJ in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Jan 17 19h 18m 29s -23° 30’ 03” 28.22 Sagittarius
2022 Jan 18 19h 21m 06s -23° 23’ 53” 28.24 Sagittarius
2022 Jan 19 19h 23m 43s -23° 17’ 33” 28.26 Sagittarius
2022 Jan 20 19h 26m 17s -23° 11’ 03” 28.27 Sagittarius
2022 Jan 21 19h 28m 53s -23° 04’ 27” 28.29 Sagittarius
2022 Jan 22 19h 31m 27s -22° 57’ 42” 28.30 Sagittarius
2022 Jan 23 19h 34m 00s -22° 50’ 48” 28.32 Sagittarius
2022 Jan 24 19h 36m 33s -22° 43’ 46” 28.33 Sagittarius
2022 Jan 25 19h 39m 06s -22° 36’ 37” 28.34 Sagittarius
2022 Jan 26 19h 41m 38s -22° 29’ 20” 28.36 Sagittarius
2022 Jan 27 19h 44m 08s -22° 21’ 55” 28.37 Sagittarius
2022 Jan 28 19h 46m 38s -22° 14’ 21” 28.38 Sagittarius
2022 Jan 29 19h 49m 09s -22° 06’ 42” 28.40 Sagittarius
2022 Jan 30 19h 51m 38s -21° 58’ 54” 28.41 Sagittarius