Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Asteroid 2018 AJ

Asteroid 2018 AJ is currently in the constellation of Capricornus. The current Right Ascension of Asteroid 2018 AJ is 20h 35m 57s and the Declination is -14° 11’ 11” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 2018 AJ is 27.98 (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]:

20h 35m 57s
-14° 11’ 11”

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 Capricornus on October, 28 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 2018 AJ in Capricornus on October, 28 2020
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: 20h 35m 57s
Dec: -14° 11’ 11”
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 217,465,464 kilometers, equivalent to 1.453667 Astronomical Units. Light takes 12 minutes and 5.3867 seconds to travel from Asteroid 2018 AJ and arrive to us.

12 minutes and 5.3867 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 27.98.


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: 104.2°
Max altitude: 24.4°
Azimuth: 255.8°

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 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.30626558
Orbit inclination i 5.66830979°
Perihelion distance q 0.98566955 AU
147,454,066 km
Aphelion distance Q 1.85596415 AU
277,648,285 km
Semi-major axis a 1.42081685 AU
212,551,175 km
Orbital period period 1.6900 years
618.5938 days
Date of perihelion transit Tp 2019-Oct-17 09:34:08
2,458,773.8987 JD
Next perihelion transit 2021-Jun-26 23:49
2,459,392.4925 JD
Argument of perihelion peri 195.36578716844°
Longitude of the ascending node node 303.60964841639°
Mean anomaly M 131.87404087106°
Mean motion n 0.58196508°/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
2020 Oct 21 20h 27m 43s -14° 41’ 44” 27.87 Capricornus
2020 Oct 22 20h 28m 45s -14° 37’ 59” 27.89 Capricornus
2020 Oct 23 20h 29m 47s -14° 34’ 09” 27.90 Capricornus
2020 Oct 24 20h 30m 51s -14° 30’ 11” 27.92 Capricornus
2020 Oct 25 20h 31m 56s -14° 26’ 08” 27.93 Capricornus
2020 Oct 26 20h 33m 03s -14° 21’ 57” 27.95 Capricornus
2020 Oct 27 20h 34m 12s -14° 17’ 41” 27.96 Capricornus
2020 Oct 28 20h 35m 21s -14° 13’ 18” 27.98 Capricornus
2020 Oct 29 20h 36m 33s -14° 08’ 49” 27.99 Capricornus
2020 Oct 30 20h 37m 45s -14° 04’ 14” 28.01 Capricornus
2020 Oct 31 20h 38m 59s -13° 59’ 32” 28.02 Aquarius
2020 Nov 01 20h 40m 14s -13° 54’ 43” 28.03 Aquarius
2020 Nov 02 20h 41m 30s -13° 49’ 49” 28.04 Aquarius
2020 Nov 03 20h 42m 47s -13° 44’ 48” 28.06 Aquarius