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Asteroid Near-Earth

Seleucus

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3288 Seleucus (1982 DV)

Where is it now

Distance from Sun
2.77 AU
True anomaly
156.65°
Distance from Earth
1.818 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth Seleucus — 2.77 AU from the Sun Seleucus
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Seleucus is 1.818 AU from Earth today (15.1 light-minutes).

In the sky

Right ascension
23h 41m 29s
Declination
+03° 27′ 32″
Constellation
Pisces
Distance from Earth
1.82 AU
Elongation from the Sun
157.51° — 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
2.034 AU
Eccentricity
0.4545
Inclination
5.93°
Orbital period
2.9 years
Perihelion
1.11 AU
Aphelion
2.959 AU
Longitude of ascending node
218.57°
Argument of periapsis
349.41°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 41.4 LD
0.1063 AU
Tisserand (Jupiter)
3.666

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
2,914
Data arc
44.61 years
First observed
28 February 1982
Last observed
9 October 2026
Residual RMS
0.48 ″
Solution · Otto Matic
10 October 2026

Physical properties

Mean radius
1.40 km
Rotation period
3.13 days

Visual & observation

Geometric albedo
0.22
Absolute magnitude (H)
15.34
Colour index (B–V)
0.91
Spectral type (SMASS)
K
Spectral type (Tholen)
S
Colour index (U–B)
0.5

Discovery & classification

Discovered by
Schuster, H.-E.
Discovery date
28 February 1982
Discovery site
La Silla

Also known as 3288 · 1982 DV

Amor Near-Earth Object Named

Close approaches 3 on record

Flyby geometry
Ecliptic flyby of Seleucus at 2101-04-13 16:52 UTC Top-down view of the ecliptic, Earth at the centre, for the 2101-04-13 16:52 UTC close approach of Seleucus. Catalogue miss distance 61.3 LD · 2.36 × 10⁷ km. The curve is the geocentric path from 2101-04-10 to 2101-04-16, 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 61.3 LD · 2.36 × 10⁷ km 2101-04-13 16:52 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2101-04-13 16:52 UTC close approach of Seleucus. Catalogue miss distance 61.3 LD · 2.36 × 10⁷ km. The curve is the geocentric path from 2101-04-10 to 2101-04-16, 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
2101-04-13 16:52:00 Earth 0.1576 AU 61.3 LD 6.9 km/s
2156-04-30 23:36:00 Earth 0.1218 AU 47.4 LD 6.1 km/s

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

Sources