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Asteroid Near-Earth

2017 HX

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(2017 HX)

Where is it now

Distance from Sun
0.988 AU
True anomaly
144.62°
Distance from Earth
1.855 AU
As of
16 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.997 AU from the Sun Earth 2017 HX — 0.988 AU from the Sun 2017 HX
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 HX is 1.855 AU from Earth today (15.4 light-minutes).

In the sky

Right ascension
12h 05m 56s
Declination
-05° 10′ 26″
Constellation
Virgo
Distance from Earth
1.86 AU
Elongation from the Sun
20.81° — near the Sun — look low at dusk or dawn

Visible from both hemispheres.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.782 AU
Eccentricity
0.4637
Inclination
10.98°
Orbital period
252.8 days
Perihelion
0.42 AU
Aphelion
1.145 AU
Longitude of ascending node
207.63°
Argument of periapsis
169.53°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 25.9 LD
0.0665 AU
Tisserand (Jupiter)
7.325

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
55
Data arc
18.02 years
First observed
15 April 2008
Last observed
22 April 2026
Residual RMS
0.56 ″
Solution · Otto Matic
23 April 2026

Visual & observation

Absolute magnitude (H)
24.25

Discovery & classification

Aten Near-Earth Object

Close approaches 120 on record

Flyby geometry
Ecliptic flyby of 2017 HX at 2028-03-06 12:04 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-03-06 12:04 UTC close approach of 2017 HX. Catalogue miss distance 54.0 LD · 2.07 × 10⁷ km. The curve is the geocentric path from 2028-03-03 to 2028-03-09, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 54.0 LD · 2.07 × 10⁷ km 2028-03-06 12:04 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-03-06 12:04 UTC close approach of 2017 HX. Catalogue miss distance 54.0 LD · 2.07 × 10⁷ km. The curve is the geocentric path from 2028-03-03 to 2028-03-09, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2028-03-06 12:04:00 Earth 0.1386 AU 54.0 LD 13 km/s
2032-02-17 01:45:00 Mercury 0.0911 AU 35.5 LD 18.4 km/s
2032-02-17 01:45:00 Merc 0.0911 AU 35.5 LD 18.4 km/s
2035-04-24 17:22:00 Earth 0.1173 AU 45.7 LD 10.6 km/s
2037-03-06 23:00:00 Earth 0.1369 AU 53.3 LD 12.9 km/s
2037-09-01 13:24:00 Merc 0.0909 AU 35.4 LD 18 km/s
2037-09-01 13:24:00 Mercury 0.0909 AU 35.4 LD 18 km/s
2043-03-17 22:33:00 Mercury 0.0916 AU 35.7 LD 17.8 km/s
2043-03-17 22:33:00 Merc 0.0916 AU 35.7 LD 17.8 km/s
2044-04-23 23:48:00 Earth 0.1173 AU 45.6 LD 10.6 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources