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Trash neo 13 EP

(9400) 1994 TW1

Position computed live · sbdb

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Live ephemeris

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Score breakdown

· 4 badges
13 pts · Trash
Trash 15 pts → Common
  • Near-Earth object +5
  • Amor: shadows Earth's orbit from outside +4
  • Stony asteroid +4
  • Catalogue designation only +0
Total score 13

2 more points to reach Common.

Badges

  • Near-Earth object · +5
  • Catalogue designation only
  • Amor: shadows Earth's orbit from outside · +4
  • Stony asteroid · +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 1.09 AU of the Sun — inside the orbit of Mars.
  • One lap. A single orbit around the Sun takes it about 4.2 years.
  • How far it roams. Its orbit swings between 1.09 and 4.09 AU from the Sun.

Sense of scale

  • Sense of scale. In everyday terms it is roughly 0.4× the height of Mount Everest.

By the numbers

  • Size. Roughly 3.7 km across.

What's in a name

  • Designation. Known only by its catalogue designation — no name yet.

Properties

albedo
0.155
aphelion au
4.09
designation
9400
diameter km
3.698
eccentricity
0.5806
full name
9400 (1994 TW1)
h mag
14.84
inclination
35.98
mean motion deg day
0.2367
moid au
0.285
name
(9400) 1994 TW1
number only
yes
orbit class
AMO
perihelion au
1.086
rotation period h
97.1
semi major au
2.588
spec taxonomy
Sr
spect
Sr

About (9400) 1994 TW1

(9400) 1994 TW1 is a trash neo. It has spectral type Sr and swings within 1.086 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, (9400) 1994 TW1 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 (9400) 1994 TW1 is a trash neo

(9400) 1994 TW1 scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Near-Earth object, Catalogue designation only, Amor: shadows Earth's orbit from outside and Stony asteroid — 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.