← Back to dex - Has a proper name +8
- Near-Earth object +5
- Amor: shadows Earth's orbit from outside +4
Total score 17
5 more points to reach Uncommon.
Badges
- 🌠 Near-Earth object · +5
- 🏷️ Has a proper name · +8
- 💘 Amor: shadows Earth's orbit from outside · +4
✨ Trivia
What it actually is
- 🛸 Its orbit family. An Amor-class object. It approaches Earth's orbit from outside without ever crossing it — named for the asteroid Amor, which swept past at 16 million km in 1932.
- 🌞 Closest approach. At its nearest it comes within 1.11 AU of the Sun — inside the orbit of Mars.
- 🔁 One lap. A single orbit around the Sun takes it about 2.9 years.
- 🥏 How far it roams. Its orbit swings between 1.11 and 2.96 AU from the Sun.
Sense of scale
- 🧱 Sense of scale. In everyday terms it is roughly 0.3× the height of Mount Everest.
Standing on it
- 🦘 Don't jump. Escape velocity here is only around 1.69 m/s. A determined jump would launch you off it and into your own orbit around the Sun.
By the numbers
- 📐 Size. Roughly 2.8 km across.
What's in a name
- 🏷️ Named. Notable enough to have earned a proper name, not just a catalogue number.
Properties
- albedo
- 0.22
- aphelion au
- 2.96
- designation
- 3288
- diameter km
- 2.8
- eccentricity
- 0.4545
- full name
- 3288 Seleucus (1982 DV)
- h mag
- 15.34
- inclination
- 5.93
- mean motion deg day
- 0.3397
- moid au
- 0.106
- name
- Seleucus
- named
- yes
- orbit class
- AMO
- perihelion au
- 1.11
- rotation period h
- 75
- semi major au
- 2.034
- spec taxonomy
- K
- spect
- K
About Seleucus
Seleucus is a common neo. It has spectral type K and swings within 1.11 AU of the Sun at perihelion.
An Amor-class object. It approaches Earth's orbit from outside without ever crossing it — named for the asteroid Amor, which swept past at 16 million km in 1932.
How to see it
Like any astronomical target, Seleucus is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. Because it moves against the background stars, the live position panel on this page tracks where it is right now. The visibility panel above works out tonight's viewing window for your saved location.
Why Seleucus is a common neo
Seleucus scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.
That score comes from 3 science badges — Near-Earth object, Has a proper name and Amor: shadows Earth's orbit from outside — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.