Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]

Asteroid 10 Hygiea

Asteroid 10 Hygiea is currently in the constellation of Sagittarius. The current Right Ascension of Asteroid 10 Hygiea is 19h 25m 53s and the Declination is -22° 06’ 07” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 10 Hygiea is 11.36 (JPL).

Summary of key facts about Asteroid 10 Hygiea [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 25m 53s
-22° 06’ 07”

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 10 Hygiea available on TheSkyLive:

Available Resources

Asteroid 10 Hygiea Position and Finder Charts

Below we provide Asteroid 10 Hygiea 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 10 Hygiea in Sagittarius on February, 06 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 10 Hygiea in Sagittarius on February, 06 2023
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 10 Hygiea is right now. Click on the image to see a more detailed fullscreen tracker view.

10 Hygiea
RA: 19h 25m 53s
Dec: -22° 06’ 07”
Deep sky finder chart for Asteroid 10 Hygiea
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 10 Hygiea?, a page that provides all the information needed to find Asteroid 10 Hygiea in the sky and additional links to sky charts.

Asteroid 10 Hygiea Distance from Earth

The distance of Asteroid 10 Hygiea from Earth is currently 555,378,633 kilometers, equivalent to 3.712477 Astronomical Units. Light takes 30 minutes and 52.5437 seconds to travel from Asteroid 10 Hygiea and arrive to us.

30 minutes and 52.5437 seconds

The following chart shows the distance of Asteroid 10 Hygiea 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 10 Hygiea 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 10 Hygiea from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 10 Hygiea to Earth

Between January 2013 and December 2100, the closest approach of Asteroid 10 Hygiea to Earth happens on Fri May 20 2078 at a distance of 1.747301 Astronomical Units, or 261,392,555 kilometers:

Fri May 20 2078

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

Asteroid 10 Hygiea brightness

The current visual magnitude of Asteroid 10 Hygiea is 11.36.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 10 Hygiea, 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 10 Hygiea between January 2013 and December 2100

Asteroid 10 Hygiea 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 10 Hygiea rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.1°
Max altitude: 16.4°
Azimuth: 247.9°

The rise and set times are defined as the time at which the upper limb of Asteroid 10 Hygiea 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 10 Hygiea Orbital Elements

The following table lists the orbital elements of Asteroid 10 Hygiea at epoch 20 January 2022 00:00 UTC (JD: 2459600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.11162598
Orbit inclination i 3.83092895°
Perihelion distance q 2.79115351 AU
417,550,623 km
Aphelion distance Q 3.49258161 AU
522,482,772 km
Semi-major axis a 3.14186756 AU
470,016,698 km
Orbital period period 5.5692 years
2,034.1372 days
Date of perihelion transit Tp 2022-Jul-15 17:52:12
2,459,776.2446 JD
Next perihelion transit 2028-Feb-08 21:09
2,461,810.3818 JD
Argument of perihelion peri 312.49331096252°
Longitude of the ascending node node 283.18418965036°
Mean anomaly M 328.89686075381°
Mean motion n 0.17697921°/day

Visualization of Asteroid 10 Hygiea Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 10 Hygiea with respect of the Sun and the orbits of the major planets. The position of Asteroid 10 Hygiea 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 10 Hygiea
View Asteroid 10 Hygiea in the 3D Solar System Simulator

Asteroid 10 Hygiea Physical Data

The following shows the known values of the most important physical parameters of Asteroid 10 Hygiea. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 407.12 km 0.0320
Sideral Rotation 27.6230 hours 1.1541
Absolute Magnitude 5.43
Geometric Albedo 0.0717

Asteroid 10 Hygiea 15 Days Ephemeris

The following table lists the ephemerides of Asteroid 10 Hygiea computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 10 Hygiea in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2023 Jan 30 19h 12m 26s -22° 36’ 28” 11.31 Sagittarius
2023 Jan 31 19h 14m 11s -22° 32’ 48” 11.32 Sagittarius
2023 Feb 01 19h 15m 54s -22° 29’ 05” 11.32 Sagittarius
2023 Feb 02 19h 17m 38s -22° 25’ 18” 11.33 Sagittarius
2023 Feb 03 19h 19m 21s -22° 21’ 28” 11.33 Sagittarius
2023 Feb 04 19h 21m 02s -22° 17’ 34” 11.34 Sagittarius
2023 Feb 05 19h 22m 45s -22° 13’ 36” 11.34 Sagittarius
2023 Feb 06 19h 24m 26s -22° 09’ 33” 11.35 Sagittarius
2023 Feb 07 19h 26m 08s -22° 05’ 29” 11.36 Sagittarius
2023 Feb 08 19h 27m 51s -22° 01’ 21” 11.36 Sagittarius
2023 Feb 09 19h 29m 31s -21° 57’ 07” 11.37 Sagittarius
2023 Feb 10 19h 31m 11s -21° 52’ 53” 11.37 Sagittarius
2023 Feb 11 19h 32m 53s -21° 48’ 33” 11.37 Sagittarius
2023 Feb 12 19h 34m 32s -21° 44’ 12” 11.38 Sagittarius