Asteroid 162173 Ryugu (1999 JU3)
Asteroid 162173 Ryugu (1999 JU3) is in the constellation of
Ophiuchus,
at a distance of
Finder Charts
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High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 162173 Ryugu (1999 JU3) is right now. Click on the image to see a more detailed fullscreen tracker view.
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.
Celestial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
Today's rise, transit and set times of Asteroid 162173 Ryugu (1999 JU3) from Greenwich, UK (all times relative to the local timezone Europe/London):
- 162173 Ryugu (1999 JU3) is below the horizon from Greenwich, UK.
- Given its current magnitude, 162173 Ryugu (1999 JU3) is visible only through long exposure photography.
- Go to interactive sky chart
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Distance from Earth
The distance of Asteroid 162173 Ryugu (1999 JU3) from Earth is currently
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.
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
Between 1 January 2013 and 30 December 2100, the closest approach of Asteroid 162173 Ryugu (1999 JU3) to Earth happens on Sun Dec 6 2076 at a distance of 0.010460 Astronomical Units, or 1,564,794 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
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.
Orbital Elements
The following table lists the orbital elements of Asteroid 162173 Ryugu (1999 JU3) at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.19108984 |
| Orbit inclination | i | 5.86617919° |
| Perihelion distance | q | 0.96337310 AU 144,118,565 km |
| Aphelion distance | Q |
1.41853074 AU 212,209,178 km |
| Semi-major axis | a |
1.19095192 AU 178,163,872 km |
| Orbital period | period |
1.2997 years 474.7225 days |
| Date of perihelion transit | Tp | 2023-Aug-12 07:52:53 2,460,168.8284 JD |
| Next perihelion transit | 2024-Nov-29 01:13 2,460,643.5508 JD |
|
| Argument of perihelion | peri | 211.60686871766° |
| Longitude of the ascending node | node | 251.30134002236° |
| Mean anomaly | M | 232.35020871517° |
| Mean motion | n | 0.75833784°/day |
View Asteroid 162173 Ryugu (1999 JU3) in the 3D Solar System Simulator
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. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2025 Jun 05 | 17h 29m 56s | -21° 17’ 03” | 18.43 | Ophiuchus |
| 2025 Jun 06 | 17h 27m 31s | -21° 02’ 42” | 18.38 | Ophiuchus |
| 2025 Jun 07 | 17h 25m 07s | -20° 48’ 19” | 18.34 | Ophiuchus |
| 2025 Jun 08 | 17h 22m 42s | -20° 33’ 54” | 18.29 | Ophiuchus |
| 2025 Jun 09 | 17h 20m 18s | -20° 19’ 29” | 18.25 | Ophiuchus |
| 2025 Jun 10 | 17h 17m 55s | -20° 05’ 04” | 18.23 | Ophiuchus |
| 2025 Jun 11 | 17h 15m 33s | -19° 50’ 44” | 18.25 | Ophiuchus |
| 2025 Jun 12 | 17h 13m 13s | -19° 36’ 26” | 18.30 | Ophiuchus |
| 2025 Jun 13 | 17h 10m 55s | -19° 22’ 14” | 18.36 | Ophiuchus |
| 2025 Jun 14 | 17h 08m 37s | -19° 08’ 09” | 18.42 | Ophiuchus |
| 2025 Jun 15 | 17h 06m 23s | -18° 54’ 13” | 18.48 | Ophiuchus |
| 2025 Jun 16 | 17h 04m 11s | -18° 40’ 25” | 18.55 | Ophiuchus |
| 2025 Jun 17 | 17h 02m 01s | -18° 26’ 50” | 18.61 | Ophiuchus |
| 2025 Jun 18 | 16h 59m 55s | -18° 13’ 27” | 18.67 | Ophiuchus |
Additional Resources on TheSkyLive
- Asteroid 162173 Ryugu (1999 JU3): Complete reference information on TheSkyLive.com.
- Where is Asteroid 162173 Ryugu (1999 JU3)?: Key information on locating Asteroid 162173 Ryugu (1999 JU3) in the sky.
- Distance from Earth: Find out how far Asteroid 162173 Ryugu (1999 JU3) is from Earth right now.
- How Bright is Asteroid 162173 Ryugu (1999 JU3)?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Asteroid 162173 Ryugu (1999 JU3)'s rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Asteroid 162173 Ryugu (1999 JU3)'s position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Asteroid 162173 Ryugu (1999 JU3)'s computed ephemeris.
- Orbital elements: information about Asteroid 162173 Ryugu (1999 JU3) orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Asteroid 162173 Ryugu (1999 JU3) with respect to the major Solar System objects.