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Common neo 21 EP

Manawydan

Position computed live · sbdb

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Live ephemeris

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Score breakdown

· 4 badges
21 pts · Common
Common 22 pts → Uncommon
  • Has a proper name +8
  • Near-Earth object +5
  • Amor: shadows Earth's orbit from outside +4
  • Steeply tilted orbit (i > 40°) +4
Total score 21

1 more point to reach Uncommon.

Badges

  • Near-Earth object · +5
  • Has a proper name · +8
  • Amor: shadows Earth's orbit from outside · +4
  • Steeply tilted orbit (i > 40°) · +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 1.27 AU of the Sun — inside the orbit of Mars.
  • One lap. A single orbit around the Sun takes it about 2.6 years.
  • How far it roams. Its orbit swings between 1.27 and 2.46 AU from the Sun.

Sense of scale

  • Sense of scale. In everyday terms it is about 7 football pitches across.

Standing on it

  • Don't jump. Escape velocity here is only around 0.44 m/s. A determined jump would launch you off it and into your own orbit around the Sun.

By the numbers

  • Estimated size. Nobody has measured its size directly. Assuming it reflects light like a typical asteroid, its brightness implies something roughly 735 metres across.

What's in a name

  • Named. Notable enough to have earned a proper name, not just a catalogue number.

Properties

aphelion au
2.46
designation
452307
eccentricity
0.318
full name
452307 Manawydan (1997 XV11)
h mag
18.42
inclination
44.27
mean motion deg day
0.3863
moid au
0.584
name
Manawydan
named
yes
orbit class
AMO
perihelion au
1.273
semi major au
1.867

About Manawydan

Manawydan is a common neo. It swings within 1.273 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, Manawydan 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 Manawydan is a common neo

Manawydan scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Near-Earth object, Has a proper name, Amor: shadows Earth's orbit from outside and Steeply tilted orbit (i > 40°) — 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.