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Asteroid Near-Earth

2020 HF9

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(2020 HF9)

2020 HF9 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.96 AU to 1.09 AU from the Sun; one orbit takes 377.5 days. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
0.979 AU
True anomaly
310.41°
Distance from Earth
1.228 AU
As of
3 November 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 — 0.992 AU from the Sun Earth 2020 HF9 — 0.979 AU from the Sun 2020 HF9
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 HF9 is 1.228 AU from Earth today (10.2 light-minutes).

In the sky

Right ascension
17h 39m 51s
Declination
-51° 28′ 32″
Constellation
Ara
Distance from Earth
1.23 AU
Elongation from the Sun
51.04° — near the Sun — look low at dusk or dawn

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
1.022 AU
Eccentricity
0.0621
Inclination
37.06°
Orbital period
377.5 days
Perihelion
0.959 AU
Aphelion
1.086 AU
Longitude of ascending node
43.57°
Argument of periapsis
330.72°
Epoch · J2000
2458969.5
Orbit class · APO
Apollo
Earth MOID · 9.9 LD
0.0255 AU
Tisserand (Jupiter)
5.796

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
24
Data arc
6 days
First observed
28 April 2020
Last observed
4 May 2020
Residual RMS
0.53 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
24.7

Discovery & classification

Apollo Near-Earth Object

Sources