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Asteroid Near-Earth

2007 UW1

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(2007 UW1)

Where is it now

Distance from Sun
0.999 AU
True anomaly
209.45°
Distance from Earth
0.111 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 2007 UW1 — 0.999 AU from the Sun 2007 UW1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2007 UW1 is 0.111 AU from Earth today (55.4 light-seconds).

In the sky

Right ascension
20h 01m 51s
Declination
-25° 42′ 18″
Constellation
Sagittarius
Distance from Earth
0.11 AU
Elongation from the Sun
88.96° — well clear of the Sun

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
0.907 AU
Eccentricity
0.1209
Inclination
8.22°
Orbital period
315.8 days
Perihelion
0.798 AU
Aphelion
1.017 AU
Longitude of ascending node
25.92°
Argument of periapsis
146.58°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.7 LD
0.0018 AU
Tisserand (Jupiter)
6.554

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
38
Data arc
6.13 years
First observed
17 October 2007
Last observed
3 December 2013
Residual RMS
0.56 ″
Solution · Otto Matic
12 October 2026

Visual & observation

Absolute magnitude (H)
22.7

Discovery & classification

Aten Near-Earth Object

Close approaches 56 on record

Flyby geometry
Ecliptic flyby of 2007 UW1 at 2039-06-10 08:35 UTC Top-down view of the ecliptic, Earth at the centre, for the 2039-06-10 08:35 UTC close approach of 2007 UW1. Catalogue miss distance 65.2 LD · 2.51 × 10⁷ km. The curve is the geocentric path from 2039-06-07 to 2039-06-13, 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 65.2 LD · 2.51 × 10⁷ km 2039-06-10 08:35 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2039-06-10 08:35 UTC close approach of 2007 UW1. Catalogue miss distance 65.2 LD · 2.51 × 10⁷ km. The curve is the geocentric path from 2039-06-07 to 2039-06-13, 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
2026-10-05 10:14:00 Earth 0.0847 AU 33.0 LD 4.7 km/s
2028-12-19 15:02:00 Venus 0.14 AU 54.5 LD 3.7 km/s
2033-03-19 13:24:00 Venus 0.0798 AU 31.1 LD 4.1 km/s
2037-06-14 04:29:00 Venus 0.1469 AU 57.2 LD 3.1 km/s
2039-06-10 08:35:00 Earth 0.1675 AU 65.2 LD 4.7 km/s
2039-10-21 19:10:00 Earth 0.031 AU 12.1 LD 5.2 km/s
2045-09-10 13:13:00 Earth 0.1727 AU 67.2 LD 6.5 km/s
2058-05-19 18:14:00 Earth 0.1774 AU 69.1 LD 5.8 km/s
2058-10-23 12:57:00 Earth 0.1153 AU 44.9 LD 7 km/s
2064-09-30 19:00:00 Earth 0.0981 AU 38.2 LD 4.9 km/s

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

Sources