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Asteroid Near-Earth

2023 HL1

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(2023 HL1)

Where is it now

Distance from Sun
0.665 AU
True anomaly
354.43°
Distance from Earth
0.341 AU
As of
19 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 — 0.996 AU from the Sun Earth 2023 HL1 — 0.665 AU from the Sun 2023 HL1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 HL1 is 0.341 AU from Earth today (2.8 light-minutes).

In the sky

Right ascension
14h 07m 42s
Declination
-18° 21′ 42″
Constellation
Virgo
Distance from Earth
0.34 AU
Elongation from the Sun
10.53° — too close to the Sun to observe

Favours the southern hemisphere; low or below the horizon from far north.

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
0.847 AU
Eccentricity
0.2158
Inclination
4.99°
Orbital period
284.9 days
Perihelion
0.664 AU
Aphelion
1.03 AU
Longitude of ascending node
53.68°
Argument of periapsis
333°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.3 LD
0.0058 AU
Tisserand (Jupiter)
6.926

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
45
Data arc
37 days
First observed
9 April 2023
Last observed
16 May 2023
Residual RMS
0.42 ″
Solution · Otto Matic
20 May 2023

Visual & observation

Absolute magnitude (H)
25.25

Discovery & classification

Aten Near-Earth Object

Close approaches 49 on record

Flyby geometry
Ecliptic flyby of 2023 HL1 at 2026-10-24 08:36 UTC Top-down view of the ecliptic, Earth at the centre, for the 2026-10-24 08:36 UTC close approach of 2023 HL1. Catalogue miss distance 128.9 LD · 4.96 × 10⁷ km. The curve is the geocentric path from 2026-10-21 to 2026-10-27, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 128.9 LD · 4.96 × 10⁷ km 2026-10-24 08:36 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2026-10-24 08:36 UTC close approach of 2023 HL1. Catalogue miss distance 128.9 LD · 4.96 × 10⁷ km. The curve is the geocentric path from 2026-10-21 to 2026-10-27, 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. 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
2026-10-21 06:07:00 Venus 0.0602 AU 23.4 LD 5.5 km/s
2026-10-24 08:36:00 Earth 0.3313 AU 128.9 LD 10.7 km/s
2027-05-05 07:51:00 Earth 0.4977 AU 193.7 LD 20.4 km/s
2030-03-14 22:04:00 Earth 0.0967 AU 37.6 LD 6.2 km/s
2030-07-13 05:39:00 Earth 0.2293 AU 89.2 LD 3.4 km/s
2033-11-11 22:29:00 Earth 0.3162 AU 123.1 LD 10.1 km/s
2034-05-10 05:09:00 Earth 0.3656 AU 142.3 LD 16.2 km/s
2035-04-19 02:12:00 Venus 0.1008 AU 39.2 LD 11.2 km/s
2037-03-14 05:09:00 Earth 0.2177 AU 84.7 LD 10.8 km/s
2037-08-17 09:00:00 Earth 0.2905 AU 113.1 LD 7.2 km/s

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

Sources