Skip to content
Public Universe
Asteroid Near-Earth

2024 UP27

Add to an observing list or journal →

(2024 UP27)

Where is it now

Distance from Sun
0.944 AU
True anomaly
157.77°
Distance from Earth
0.438 AU
As of
15 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 2024 UP27 — 0.944 AU from the Sun 2024 UP27
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2024 UP27 is 0.438 AU from Earth today (3.6 light-minutes).

In the sky

Right ascension
18h 15m 09s
Declination
-14° 17′ 43″
Constellation
Serpens
Distance from Earth
0.44 AU
Elongation from the Sun
70.84° — well clear of the Sun

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
0.658 AU
Eccentricity
0.588
Inclination
6.24°
Orbital period
194.8 days
Perihelion
0.271 AU
Aphelion
1.044 AU
Longitude of ascending node
219.82°
Argument of periapsis
339.06°
Epoch · J2000
2460609.5
Orbit class · ATE
Aten
Earth MOID · 3.9 LD
0.0101 AU
Tisserand (Jupiter)
8.484

Orbit quality

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

Observations used
19
Data arc
24 hours
First observed
26 October 2024
Last observed
27 October 2024
Residual RMS
0.62 ″
Solution · Otto Matic
13 November 2024

Visual & observation

Absolute magnitude (H)
25.2

Discovery & classification

Aten Near-Earth Object

Close approaches 169 on record

Flyby geometry
Ecliptic flyby of 2024 UP27 at 2031-10-24 05:30 UTC Top-down view of the ecliptic, Earth at the centre, for the 2031-10-24 05:30 UTC close approach of 2024 UP27. Catalogue miss distance 144.0 LD · 5.54 × 10⁷ km. The curve is the geocentric path from 2031-10-21 to 2031-10-27, 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 144.0 LD · 5.54 × 10⁷ km 2031-10-24 05:30 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2031-10-24 05:30 UTC close approach of 2024 UP27. Catalogue miss distance 144.0 LD · 5.54 × 10⁷ km. The curve is the geocentric path from 2031-10-21 to 2031-10-27, 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
2026-09-18 00:47:00 Venus 0.1154 AU 44.9 LD 21.5 km/s
2026-10-02 22:58:00 Earth 0.3849 AU 149.8 LD 26 km/s
2027-02-16 06:05:00 Mercury 0.0781 AU 30.4 LD 34.2 km/s
2027-02-16 06:05:00 Merc 0.0781 AU 30.4 LD 34.2 km/s
2028-02-07 07:46:00 Venus 0.097 AU 37.7 LD 17.3 km/s
2031-10-24 05:30:00 Earth 0.3701 AU 144.0 LD 25.5 km/s
2032-10-30 02:10:00 Earth 0.0324 AU 12.6 LD 13.5 km/s
2033-09-27 11:22:00 Earth 0.0705 AU 27.4 LD 13.3 km/s
2034-09-16 20:55:00 Venus 0.115 AU 44.8 LD 20.8 km/s
2034-10-02 02:07:00 Earth 0.3602 AU 140.2 LD 25 km/s

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

Sources