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Asteroid Near-Earth

2020 HG9

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(2020 HG9)

Where is it now

Distance from Sun
1.049 AU
True anomaly
220.03°
Distance from Earth
1.988 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 2020 HG9 — 1.049 AU from the Sun 2020 HG9
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 HG9 is 1.988 AU from Earth today (16.5 light-minutes).

In the sky

Right ascension
14h 34m 25s
Declination
-14° 57′ 47″
Constellation
Libra
Distance from Earth
1.98 AU
Elongation from the Sun
13.71° — too close to the Sun to observe

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
0.864 AU
Eccentricity
0.4184
Inclination
1.74°
Orbital period
293.3 days
Perihelion
0.502 AU
Aphelion
1.226 AU
Longitude of ascending node
64.44°
Argument of periapsis
308.86°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 1.2 LD
0.0032 AU
Tisserand (Jupiter)
6.762

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
199
Data arc
4.02 years
First observed
27 April 2020
Last observed
6 May 2024
Residual RMS
0.47 ″
Solution · Otto Matic
7 May 2024

Visual & observation

Absolute magnitude (H)
23.38

Discovery & classification

Aten Near-Earth Object

Close approaches 265 on record

Flyby geometry
Ecliptic flyby of 2020 HG9 at 2027-11-12 17:49 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-11-12 17:49 UTC close approach of 2020 HG9. Catalogue miss distance 176.9 LD · 6.8 × 10⁷ km. The curve is the geocentric path from 2027-11-09 to 2027-11-15, 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 176.9 LD · 6.8 × 10⁷ km 2027-11-12 17:49 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-11-12 17:49 UTC close approach of 2020 HG9. Catalogue miss distance 176.9 LD · 6.8 × 10⁷ km. The curve is the geocentric path from 2027-11-09 to 2027-11-15, 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
2027-11-12 17:49:00 Earth 0.4546 AU 176.9 LD 17 km/s
2028-04-27 07:31:00 Earth 0.1866 AU 72.6 LD 8.9 km/s
2030-12-08 04:50:00 Venus 0.0476 AU 18.5 LD 12.6 km/s
2031-11-23 22:52:00 Earth 0.4285 AU 166.8 LD 14.9 km/s
2032-04-13 12:44:00 Earth 0.219 AU 85.2 LD 9.2 km/s
2032-07-13 21:38:00 Earth 0.358 AU 139.3 LD 8.3 km/s
2035-12-08 03:40:00 Earth 0.3892 AU 151.5 LD 12 km/s
2036-03-30 12:06:00 Earth 0.2276 AU 88.6 LD 9.3 km/s
2036-08-01 07:14:00 Earth 0.4098 AU 159.5 LD 12.3 km/s
2036-09-25 22:23:00 Venus 0.1422 AU 55.3 LD 9.5 km/s

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

Sources