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Asteroid Near-Earth

2017 YO3

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(2017 YO3)

Where is it now

Distance from Sun
0.572 AU
True anomaly
296.47°
Distance from Earth
1.543 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 2017 YO3 — 0.572 AU from the Sun 2017 YO3
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 YO3 is 1.543 AU from Earth today (12.8 light-minutes).

In the sky

Right ascension
13h 53m 04s
Declination
-13° 57′ 04″
Constellation
Virgo
Distance from Earth
1.54 AU
Elongation from the Sun
7.96° — 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
0.752 AU
Eccentricity
0.3489
Inclination
8.65°
Orbital period
238.4 days
Perihelion
0.49 AU
Aphelion
1.015 AU
Longitude of ascending node
267.92°
Argument of periapsis
19.58°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.1 LD
0.0003 AU
Tisserand (Jupiter)
7.62

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
25
Data arc
3 days
First observed
22 December 2017
Last observed
25 December 2017
Residual RMS
0.57 ″
Solution · Otto Matic
28 July 2026

Visual & observation

Absolute magnitude (H)
28.2

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 47 on record

Flyby geometry
Ecliptic flyby of 2017 YO3 at 2032-12-14 23:23 UTC Top-down view of the ecliptic, Earth at the centre, for the 2032-12-14 23:23 UTC close approach of 2017 YO3. Catalogue miss distance 25.5 LD · 9.81 × 10⁶ km. The curve is the geocentric path from 2032-12-11 to 2032-12-17, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 25.5 LD · 9.81 × 10⁶ km 2032-12-14 23:23 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2032-12-14 23:23 UTC close approach of 2017 YO3. Catalogue miss distance 25.5 LD · 9.81 × 10⁶ km. The curve is the geocentric path from 2032-12-11 to 2032-12-17, 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 north 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
2032-01-19 23:56:00 Merc 0.0745 AU 29.0 LD 14.4 km/s
2032-01-19 23:56:00 Mercury 0.0745 AU 29.0 LD 14.4 km/s
2032-08-15 06:59:00 Venus 0.1451 AU 56.5 LD 13.5 km/s
2032-12-14 23:23:00 Earth 0.0656 AU 25.5 LD 10.1 km/s
2034-11-01 21:48:00 Venus 0.1474 AU 57.4 LD 10.7 km/s
2036-08-14 13:17:00 Mercury 0.0509 AU 19.8 LD 14.4 km/s
2036-08-14 13:17:00 Merc 0.0509 AU 19.8 LD 14.4 km/s
2041-03-09 21:43:00 Merc 0.048 AU 18.7 LD 16.3 km/s
2041-03-09 21:43:00 Mercury 0.048 AU 18.7 LD 16.3 km/s
2045-10-03 18:42:00 Mercury 0.0806 AU 31.4 LD 19.7 km/s

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

Sources