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Asteroid Near-Earth

2024 SD1

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(2024 SD1)

Where is it now

Distance from Sun
0.831 AU
True anomaly
98.65°
Distance from Earth
1.785 AU
As of
20 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 — 0.996 AU from the Sun Earth 2024 SD1 — 0.831 AU from the Sun 2024 SD1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2024 SD1 is 1.785 AU from Earth today (14.8 light-minutes).

In the sky

Right ascension
14h 22m 47s
Declination
-17° 25′ 48″
Constellation
Libra
Distance from Earth
1.79 AU
Elongation from the Sun
11.39° — too close to the Sun to observe

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
0.9 AU
Eccentricity
0.3538
Inclination
8.43°
Orbital period
311.6 days
Perihelion
0.581 AU
Aphelion
1.218 AU
Longitude of ascending node
1.5°
Argument of periapsis
131.45°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 3.7 LD
0.0095 AU
Tisserand (Jupiter)
6.554

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
16
Data arc
2 days
First observed
24 September 2024
Last observed
26 September 2024
Residual RMS
0.49 ″
Solution · Otto Matic
25 September 2024

Visual & observation

Absolute magnitude (H)
28.64

Discovery & classification

Aten Near-Earth Object

Close approaches 178 on record

Flyby geometry
Ecliptic flyby of 2024 SD1 at 2029-06-08 15:44 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-06-08 15:44 UTC close approach of 2024 SD1. Catalogue miss distance 59.9 LD · 2.3 × 10⁷ km. The curve is the geocentric path from 2029-06-05 to 2029-06-11, 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 59.9 LD · 2.3 × 10⁷ km 2029-06-08 15:44 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-06-08 15:44 UTC close approach of 2024 SD1. Catalogue miss distance 59.9 LD · 2.3 × 10⁷ km. The curve is the geocentric path from 2029-06-05 to 2029-06-11, 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
2029-06-08 15:44:00 Earth 0.1538 AU 59.9 LD 8.4 km/s
2030-01-24 11:33:00 Earth 0.412 AU 160.3 LD 15.4 km/s
2030-02-10 21:02:00 Venus 0.1196 AU 46.6 LD 10.9 km/s
2030-09-25 01:18:00 Earth 0.1586 AU 61.7 LD 14.9 km/s
2034-04-04 07:07:00 Venus 0.1121 AU 43.6 LD 9.2 km/s
2035-05-01 05:49:00 Earth 0.2658 AU 103.4 LD 7.5 km/s
2035-07-14 09:11:00 Earth 0.2276 AU 88.6 LD 7.5 km/s
2036-01-03 07:35:00 Earth 0.3952 AU 153.8 LD 13.6 km/s
2036-09-17 17:17:00 Earth 0.3361 AU 130.8 LD 20.3 km/s
2040-06-28 21:55:00 Earth 0.4887 AU 190.2 LD 24.1 km/s

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

Sources