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Asteroid Near-Earth

2017 YJ7

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(2017 YJ7)

Where is it now

Distance from Sun
0.737 AU
True anomaly
95.81°
Distance from Earth
0.275 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 YJ7 — 0.737 AU from the Sun 2017 YJ7
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 YJ7 is 0.275 AU from Earth today (2.3 light-minutes).

In the sky

Right ascension
14h 32m 41s
Declination
-05° 31′ 35″
Constellation
Virgo
Distance from Earth
0.27 AU
Elongation from the Sun
16.4° — 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
0.783 AU
Eccentricity
0.2945
Inclination
3.29°
Orbital period
253.2 days
Perihelion
0.553 AU
Aphelion
1.014 AU
Longitude of ascending node
290.66°
Argument of periapsis
351.7°
Epoch · J2000
2458121.5
Orbit class · ATE
Aten
Earth MOID · 4.8 LD
0.0124 AU
Tisserand (Jupiter)
7.383

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
39
Data arc
19 days
First observed
28 December 2017
Last observed
16 January 2018
Residual RMS
0.51 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
26.3

Discovery & classification

Aten Near-Earth Object

Close approaches 204 on record

Flyby geometry
Ecliptic flyby of 2017 YJ7 at 2034-01-30 19:49 UTC Top-down view of the ecliptic, Earth at the centre, for the 2034-01-30 19:49 UTC close approach of 2017 YJ7. Catalogue miss distance 34.2 LD · 1.31 × 10⁷ km. The curve is the geocentric path from 2034-01-27 to 2034-02-02, 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 34.2 LD · 1.31 × 10⁷ km 2034-01-30 19:49 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2034-01-30 19:49 UTC close approach of 2017 YJ7. Catalogue miss distance 34.2 LD · 1.31 × 10⁷ km. The curve is the geocentric path from 2034-01-27 to 2034-02-02, 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
2026-10-17 04:19:00 Venus 0.0982 AU 38.2 LD 13.4 km/s
2034-01-30 19:49:00 Earth 0.0878 AU 34.2 LD 9.1 km/s
2035-12-08 12:49:00 Earth 0.2216 AU 86.2 LD 13.6 km/s
2036-04-19 18:36:00 Venus 0.1458 AU 56.7 LD 16.5 km/s
2041-01-22 20:48:00 Earth 0.4055 AU 157.8 LD 19.9 km/s
2042-08-23 02:19:00 Merc 0.0977 AU 38.0 LD 9 km/s
2042-08-23 02:19:00 Mercury 0.0977 AU 38.0 LD 9 km/s
2044-12-13 02:42:00 Earth 0.3904 AU 151.9 LD 19.3 km/s
2047-07-13 04:50:00 Earth 0.4608 AU 179.3 LD 16.2 km/s
2048-04-29 12:45:00 Venus 0.1158 AU 45.1 LD 14.6 km/s

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

Sources