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Asteroid Near-Earth

2010 PC73

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(2010 PC73)

Where is it now

Distance from Sun
0.97 AU
True anomaly
113.75°
Distance from Earth
1.625 AU
As of
22 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 — 0.995 AU from the Sun Earth 2010 PC73 — 0.97 AU from the Sun 2010 PC73
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 PC73 is 1.625 AU from Earth today (13.5 light-minutes).

In the sky

Right ascension
15h 43m 02s
Declination
-32° 29′ 32″
Constellation
Lupus
Distance from Earth
1.63 AU
Elongation from the Sun
33.71° — 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
0.937 AU
Eccentricity
0.1193
Inclination
24.2°
Orbital period
331.1 days
Perihelion
0.825 AU
Aphelion
1.048 AU
Longitude of ascending node
335.61°
Argument of periapsis
184.49°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 14.5 LD
0.0374 AU
Tisserand (Jupiter)
6.324

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
182
Data arc
10.18 years
First observed
5 August 2010
Last observed
8 October 2020
Residual RMS
0.42 ″
Solution · Otto Matic
7 July 2021

Visual & observation

Absolute magnitude (H)
22.05

Discovery & classification

Also known as 2020 QO4

Aten Near-Earth Object

Close approaches 140 on record

Flyby geometry
Ecliptic flyby of 2010 PC73 at 2029-08-27 18:59 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-08-27 18:59 UTC close approach of 2010 PC73. Catalogue miss distance 112.8 LD · 4.34 × 10⁷ km. The curve is the geocentric path from 2029-08-24 to 2029-08-30, 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 112.8 LD · 4.34 × 10⁷ km 2029-08-27 18:59 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-08-27 18:59 UTC close approach of 2010 PC73. Catalogue miss distance 112.8 LD · 4.34 × 10⁷ km. The curve is the geocentric path from 2029-08-24 to 2029-08-30, 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
2029-08-27 18:59:00 Earth 0.2898 AU 112.8 LD 15.3 km/s
2030-03-07 10:46:00 Earth 0.1926 AU 75.0 LD 14.4 km/s
2030-08-31 05:49:00 Earth 0.2416 AU 94.0 LD 13.7 km/s
2031-01-04 01:15:00 Earth 0.4203 AU 163.6 LD 16.6 km/s
2033-10-12 13:20:00 Venus 0.1079 AU 42.0 LD 15.2 km/s
2039-05-01 20:42:00 Earth 0.442 AU 172.0 LD 13.7 km/s
2039-08-28 11:31:00 Earth 0.1259 AU 49.0 LD 12.8 km/s
2040-02-17 07:33:00 Earth 0.1726 AU 67.2 LD 14.4 km/s
2040-08-31 18:11:00 Earth 0.405 AU 157.6 LD 16.6 km/s
2048-08-29 02:50:00 Earth 0.4887 AU 190.2 LD 19.6 km/s

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

Sources