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Asteroid Near-Earth

513170

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513170 (2004 KH15)

Where is it now

Distance from Sun
1.035 AU
True anomaly
125.4°
Distance from Earth
1.947 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 513170 — 1.035 AU from the Sun 513170
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 513170 is 1.947 AU from Earth today (16.2 light-minutes).

In the sky

Right ascension
13h 55m 28s
Declination
+05° 11′ 46″
Constellation
Virgo
Distance from Earth
1.95 AU
Elongation from the Sun
16.73° — 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
0.961 AU
Eccentricity
0.1701
Inclination
35.07°
Orbital period
344.2 days
Perihelion
0.798 AU
Aphelion
1.125 AU
Longitude of ascending node
78.08°
Argument of periapsis
350.07°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 41.2 LD
0.1058 AU
Tisserand (Jupiter)
6.107

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
109
Data arc
16.97 years
First observed
24 May 2004
Last observed
12 May 2021
Residual RMS
0.75 ″
Solution · Otto Matic
5 January 2023

Visual & observation

Absolute magnitude (H)
20.18

Discovery & classification

Discovered by
LINEAR
Discovery date
24 May 2004
Discovery site
Socorro

Also known as 2004 KH15

Aten Near-Earth Object

Close approaches 137 on record

Flyby geometry
Ecliptic flyby of 513170 at 2035-01-17 10:02 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-01-17 10:02 UTC close approach of 513170. Catalogue miss distance 184.9 LD · 7.11 × 10⁷ km. The curve is the geocentric path from 2035-01-14 to 2035-01-20, 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 184.9 LD · 7.11 × 10⁷ km 2035-01-17 10:02 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-01-17 10:02 UTC close approach of 513170. Catalogue miss distance 184.9 LD · 7.11 × 10⁷ km. The curve is the geocentric path from 2035-01-14 to 2035-01-20, 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
2029-05-10 17:53:00 Venus 0.1228 AU 47.8 LD 20.1 km/s
2035-01-17 10:02:00 Earth 0.475 AU 184.9 LD 24.4 km/s
2035-06-06 19:18:00 Earth 0.385 AU 149.8 LD 19.2 km/s
2035-12-21 13:12:00 Earth 0.2193 AU 85.4 LD 21.1 km/s
2036-06-08 20:09:00 Earth 0.1335 AU 52.0 LD 17 km/s
2036-11-23 15:33:00 Earth 0.2753 AU 107.1 LD 21.2 km/s
2037-06-10 15:59:00 Earth 0.2376 AU 92.5 LD 18.4 km/s
2043-07-03 08:14:00 Venus 0.0797 AU 31.0 LD 19.4 km/s
2051-06-06 03:03:00 Earth 0.4785 AU 186.2 LD 20.6 km/s
2051-12-30 16:41:00 Earth 0.2929 AU 114.0 LD 21.9 km/s

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

Sources