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Asteroid Near-Earth

875461

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875461 (2003 YJ)

Where is it now

Distance from Sun
0.75 AU
True anomaly
15.93°
Distance from Earth
1.495 AU
As of
21 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 875461 — 0.75 AU from the Sun 875461
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 875461 is 1.495 AU from Earth today (12.4 light-minutes).

In the sky

Right ascension
15h 33m 53s
Declination
-19° 43′ 19″
Constellation
Libra
Distance from Earth
1.49 AU
Elongation from the Sun
26.75° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
0.93 AU
Eccentricity
0.1988
Inclination
19.47°
Orbital period
327.8 days
Perihelion
0.746 AU
Aphelion
1.115 AU
Longitude of ascending node
89.72°
Argument of periapsis
165.67°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 46.8 LD
0.1202 AU
Tisserand (Jupiter)
6.374

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
234
Data arc
17.9 years
First observed
17 December 2003
Last observed
9 November 2021
Residual RMS
0.46 ″
Solution · Otto Matic
14 March 2026

Physical properties

Rotation period
3.26 hours

Visual & observation

Absolute magnitude (H)
20.34

Discovery & classification

Discovered by
NEAT
Discovery date
17 December 2003
Discovery site
Palomar

Also known as 2003 YJ

Aten Near-Earth Object

Close approaches 54 on record

Flyby geometry
Ecliptic flyby of 875461 at 2029-12-25 00:26 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-12-25 00:26 UTC close approach of 875461. Catalogue miss distance 47.1 LD · 1.81 × 10⁷ km. The curve is the geocentric path from 2029-12-22 to 2029-12-28, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 47.1 LD · 1.81 × 10⁷ km 2029-12-25 00:26 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-12-25 00:26 UTC close approach of 875461. Catalogue miss distance 47.1 LD · 1.81 × 10⁷ km. The curve is the geocentric path from 2029-12-22 to 2029-12-28, 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. 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
2029-12-25 00:26:00 Earth 0.1209 AU 47.1 LD 10.6 km/s
2033-12-25 16:05:00 Venus 0.0434 AU 16.9 LD 10.5 km/s
2039-01-05 00:35:00 Earth 0.1648 AU 64.1 LD 11.6 km/s
2043-11-06 19:41:00 Venus 0.128 AU 49.8 LD 13 km/s
2055-07-05 18:14:00 Venus 0.0852 AU 33.2 LD 10.8 km/s
2055-12-19 18:34:00 Earth 0.1344 AU 52.3 LD 10.6 km/s
2065-01-02 03:49:00 Earth 0.1439 AU 56.0 LD 11.2 km/s
2065-05-16 09:33:00 Venus 0.0697 AU 27.1 LD 11.6 km/s
2077-01-12 10:43:00 Venus 0.1348 AU 52.5 LD 11.6 km/s
2081-12-15 00:33:00 Earth 0.1538 AU 59.9 LD 10.6 km/s

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

Sources