Skip to content
Public Universe
Asteroid Near-Earth

2017 YG7

Add to an observing list or journal →

(2017 YG7)

Where is it now

Distance from Sun
1.044 AU
True anomaly
188.77°
Distance from Earth
1.577 AU
As of
19 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 — 0.996 AU from the Sun Earth 2017 YG7 — 1.044 AU from the Sun 2017 YG7
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 YG7 is 1.577 AU from Earth today (13.1 light-minutes).

In the sky

Right ascension
11h 04m 38s
Declination
+01° 37′ 34″
Constellation
Leo
Distance from Earth
1.57 AU
Elongation from the Sun
40.59° — near the Sun — look low at dusk or dawn

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
0.856 AU
Eccentricity
0.2246
Inclination
14.52°
Orbital period
289.1 days
Perihelion
0.663 AU
Aphelion
1.048 AU
Longitude of ascending node
284.31°
Argument of periapsis
15.21°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 19.8 LD
0.0508 AU
Tisserand (Jupiter)
6.846

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
44
Data arc
43 days
First observed
28 December 2017
Last observed
9 February 2018
Residual RMS
0.42 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
24.7

Discovery & classification

Aten Near-Earth Object

Close approaches 108 on record

Flyby geometry
Ecliptic flyby of 2017 YG7 at 2028-12-25 04:14 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-12-25 04:14 UTC close approach of 2017 YG7. Catalogue miss distance 163.2 LD · 6.27 × 10⁷ km. The curve is the geocentric path from 2028-12-22 to 2028-12-28, 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 163.2 LD · 6.27 × 10⁷ km 2028-12-25 04:14 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-12-25 04:14 UTC close approach of 2017 YG7. Catalogue miss distance 163.2 LD · 6.27 × 10⁷ km. The curve is the geocentric path from 2028-12-22 to 2028-12-28, 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
2028-12-25 04:14:00 Earth 0.4194 AU 163.2 LD 19.4 km/s
2029-07-08 12:07:00 Earth 0.3499 AU 136.2 LD 14 km/s
2030-04-16 03:33:00 Venus 0.0755 AU 29.4 LD 13.5 km/s
2032-12-21 19:56:00 Earth 0.1786 AU 69.5 LD 12 km/s
2033-06-06 00:09:00 Earth 0.3307 AU 128.7 LD 12.3 km/s
2035-10-31 18:33:00 Venus 0.0626 AU 24.4 LD 13.2 km/s
2037-01-06 07:48:00 Earth 0.0641 AU 24.9 LD 8.4 km/s
2037-04-19 18:09:00 Earth 0.298 AU 116.0 LD 6.3 km/s
2040-09-07 08:52:00 Earth 0.3575 AU 139.1 LD 10.5 km/s
2041-02-06 11:12:00 Earth 0.2206 AU 85.8 LD 10.4 km/s

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

Sources