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Asteroid Near-Earth

2020 YH

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(2020 YH)

Where is it now

Distance from Sun
1.054 AU
True anomaly
178.59°
Distance from Earth
1.209 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 2020 YH — 1.054 AU from the Sun 2020 YH
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 YH is 1.209 AU from Earth today (10.1 light-minutes).

In the sky

Right ascension
10h 07m 26s
Declination
+17° 43′ 01″
Constellation
Leo
Distance from Earth
1.21 AU
Elongation from the Sun
56.07° — near the Sun — look low at dusk or dawn

Favours the northern hemisphere; low or below the horizon from far south.

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
0.742 AU
Eccentricity
0.4201
Inclination
7.17°
Orbital period
233.5 days
Perihelion
0.43 AU
Aphelion
1.054 AU
Longitude of ascending node
28.28°
Argument of periapsis
248.78°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 31.4 LD
0.0807 AU
Tisserand (Jupiter)
7.693

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
47
Data arc
754 days
First observed
16 December 2020
Last observed
9 January 2023
Residual RMS
0.33 ″
Solution · Otto Matic
19 January 2023

Visual & observation

Absolute magnitude (H)
21.98

Discovery & classification

Aten Near-Earth Object

Close approaches 376 on record

Flyby geometry
Ecliptic flyby of 2020 YH at 2027-12-05 10:53 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-12-05 10:53 UTC close approach of 2020 YH. Catalogue miss distance 117.4 LD · 4.51 × 10⁷ km. The curve is the geocentric path from 2027-12-02 to 2027-12-08, 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 117.4 LD · 4.51 × 10⁷ km 2027-12-05 10:53 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-12-05 10:53 UTC close approach of 2020 YH. Catalogue miss distance 117.4 LD · 4.51 × 10⁷ km. The curve is the geocentric path from 2027-12-02 to 2027-12-08, 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
2027-08-26 03:52:00 Venus 0.0975 AU 37.9 LD 20.4 km/s
2027-12-05 10:53:00 Earth 0.3017 AU 117.4 LD 20.2 km/s
2028-04-11 23:57:00 Venus 0.0797 AU 31.0 LD 12.1 km/s
2029-12-27 04:11:00 Earth 0.1382 AU 53.8 LD 8.3 km/s
2031-08-10 19:45:00 Merc 0.0763 AU 29.7 LD 25.4 km/s
2031-08-10 19:45:00 Mercury 0.0763 AU 29.7 LD 25.4 km/s
2032-01-21 16:13:00 Earth 0.3302 AU 128.5 LD 20.4 km/s
2032-05-04 09:28:00 Venus 0.058 AU 22.6 LD 13.4 km/s
2032-12-20 22:32:00 Venus 0.1279 AU 49.8 LD 21.7 km/s
2033-07-09 06:18:00 Merc 0.0065 AU 2.5 LD 16.8 km/s

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

Sources