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Asteroid 162173 Ryugu (1999 JU3)

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Asteroid 162173 Ryugu (1999 JU3) Position

Asteroid 162173 Ryugu (1999 JU3) is currently in the constellation of Ophiucus. The current Right Ascension is 17h 06m 51s and the Declination is -25° 03’ 10”.

17h 06m 51s
-25° 03’ 10”

Simplified sky chart showing where Asteroid 162173 Ryugu (1999 JU3) is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Asteroid 162173 Ryugu (1999 JU3) in Ophiucus on January, 27 2020
Field of view: 60x30 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 showing where Asteroid 162173 Ryugu (1999 JU3) is right now (view fullscreen)

162173 Ryugu (1999 JU3)
RA: 17h 06m 51s
Dec: -25° 03’ 10”
Deep sky finder chart for Asteroid 162173 Ryugu (1999 JU3)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 162173 Ryugu (1999 JU3)?, a page that provides all the information needed to find Asteroid 162173 Ryugu (1999 JU3) in the sky and additional links to sky charts.

Asteroid 162173 Ryugu (1999 JU3) Distance

The distance of Asteroid 162173 Ryugu (1999 JU3) from Earth is currently 251,489,481 kilometers, equivalent to 1.681103 Astronomical Units. Light takes 13 minutes and 58.8786 seconds to travel from Asteroid 162173 Ryugu (1999 JU3) and arrive to us.

251,489,481
1.681103
13 minutes and 58.8786 seconds

The following chart shows the distance of Asteroid 162173 Ryugu (1999 JU3) 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 162173 Ryugu (1999 JU3) 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 162173 Ryugu (1999 JU3) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 162173 Ryugu (1999 JU3) to Earth

Between January 2013 and December 2100 the closest approach of Asteroid 162173 Ryugu (1999 JU3) to Earth happens on Sun Dec 6 2076 at a distance of 0.01045950 Astronomical Units, or 1,564,719 kilometers:

Sun Dec 6 2076
1,564,719
0.010459

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

Asteroid 162173 Ryugu (1999 JU3) brightness

The current visual magnitude of Asteroid 162173 Ryugu (1999 JU3) is 22.40.

22.40

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 162173 Ryugu (1999 JU3), 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 162173 Ryugu (1999 JU3) between January 2013 and December 2100

Asteroid 162173 Ryugu (1999 JU3) 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 162173 Ryugu (1999 JU3) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 115.1°
Max altitude: 13.5°
Azimuth: 244.9°
Asteroid 162173 Ryugu (1999 JU3) is below the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Asteroid 162173 Ryugu (1999 JU3) 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 162173 Ryugu (1999 JU3) Orbital Elements

The following table lists the orbital elements of Asteroid 162173 Ryugu (1999 JU3) at epoch 11 December 2011 00:00 UTC (JD: 2455907.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19022575
Orbit inclination i 5.88374239°
Perihelion distance q 0.96330811 AU
144,108,842 km
Aphelion distance Q 1.41589353 AU
211,814,658 km
Semi-major axis a 1.18960082 AU
177,961,750 km
Orbital period period 1.3000 years
473.9148 days
Date of perihelion transit Tp 2011-Dec-06 18:09:07
2,455,902.2563 JD
Next perihelion transit 2013-Mar-24 16:06
2,456,376.1712 JD
Argument of perihelion peri 211.42584970315°
Longitude of the ascending node node 251.61971097785°
Mean anomaly M 3.9832447394972°
Mean motion n 0.75963014°/day

Visualization of Asteroid 162173 Ryugu (1999 JU3) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 162173 Ryugu (1999 JU3) with respect of the Sun and the orbits of the major planets. The position of Asteroid 162173 Ryugu (1999 JU3) 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 162173 Ryugu (1999 JU3)
View Asteroid 162173 Ryugu (1999 JU3) in the 3D Solar System Simulator

Asteroid 162173 Ryugu (1999 JU3) 15 Days Ephemeris

The following table lists the ephemerides of Asteroid 162173 Ryugu (1999 JU3) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 162173 Ryugu (1999 JU3) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Jan 20 16h 43m 17s -24° 42’ 30” 22.36 Ophiucus
2020 Jan 21 16h 46m 36s -24° 46’ 18” 22.37 Ophiucus
2020 Jan 22 16h 49m 56s -24° 49’ 47” 22.37 Scorpius
2020 Jan 23 16h 53m 17s -24° 52’ 59” 22.38 Ophiucus
2020 Jan 24 16h 56m 35s -24° 55’ 55” 22.38 Ophiucus
2020 Jan 25 16h 59m 54s -24° 58’ 33” 22.39 Ophiucus
2020 Jan 26 17h 03m 14s -25° 00’ 55” 22.39 Ophiucus
2020 Jan 27 17h 06m 32s -25° 02’ 58” 22.40 Ophiucus
2020 Jan 28 17h 09m 48s -25° 04’ 45” 22.40 Ophiucus
2020 Jan 29 17h 13m 06s -25° 06’ 16” 22.40 Ophiucus
2020 Jan 30 17h 16m 23s -25° 07’ 29” 22.41 Ophiucus
2020 Jan 31 17h 19m 39s -25° 08’ 26” 22.41 Ophiucus
2020 Feb 01 17h 22m 54s -25° 09’ 06” 22.41 Ophiucus
2020 Feb 02 17h 26m 09s -25° 09’ 30” 22.42 Ophiucus