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Asteroid Near-Earth

2015 YG

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(2015 YG)

Where is it now

Distance from Sun
0.897 AU
True anomaly
138.56°
Distance from Earth
0.373 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 2015 YG — 0.897 AU from the Sun 2015 YG
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 YG is 0.373 AU from Earth today (3.1 light-minutes).

In the sky

Right ascension
10h 21m 46s
Declination
+38° 14′ 24″
Constellation
Leo Minor
Distance from Earth
0.37 AU
Elongation from the Sun
64.09° — well clear of the Sun

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
0.747 AU
Eccentricity
0.4875
Inclination
14.62°
Orbital period
235.8 days
Perihelion
0.383 AU
Aphelion
1.111 AU
Longitude of ascending node
267.91°
Argument of periapsis
355.31°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 36.6 LD
0.0941 AU
Tisserand (Jupiter)
7.606

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
40
Data arc
8.96 years
First observed
16 December 2015
Last observed
29 November 2024
Residual RMS
0.47 ″
Solution · Otto Matic
29 November 2024

Visual & observation

Absolute magnitude (H)
23.28

Discovery & classification

Aten Near-Earth Object

Close approaches 195 on record

Flyby geometry
Ecliptic flyby of 2015 YG at 2026-12-18 08:55 UTC Top-down view of the ecliptic, Earth at the centre, for the 2026-12-18 08:55 UTC close approach of 2015 YG. Catalogue miss distance 49.5 LD · 1.9 × 10⁷ km. The curve is the geocentric path from 2026-12-15 to 2026-12-21, 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 49.5 LD · 1.9 × 10⁷ km 2026-12-18 08:55 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2026-12-18 08:55 UTC close approach of 2015 YG. Catalogue miss distance 49.5 LD · 1.9 × 10⁷ km. The curve is the geocentric path from 2026-12-15 to 2026-12-21, 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
2026-12-18 08:55:00 Earth 0.1272 AU 49.5 LD 11.8 km/s
2029-01-09 18:37:00 Earth 0.1549 AU 60.3 LD 16.5 km/s
2029-11-02 12:46:00 Merc 0.0877 AU 34.1 LD 28.4 km/s
2029-11-02 12:46:00 Mercury 0.0877 AU 34.1 LD 28.4 km/s
2031-10-14 06:44:00 Mercury 0.0795 AU 30.9 LD 26.2 km/s
2031-10-14 06:44:00 Merc 0.0795 AU 30.9 LD 26.2 km/s
2033-09-24 15:04:00 Mercury 0.0871 AU 33.9 LD 26.1 km/s
2033-09-24 15:04:00 Merc 0.0871 AU 33.9 LD 26.1 km/s
2035-09-06 03:42:00 Mercury 0.0992 AU 38.6 LD 26.7 km/s
2035-09-06 03:42:00 Merc 0.0992 AU 38.6 LD 26.7 km/s

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

Sources