← Back to dex
Trash neo 9 EP

2001 SJ9

Position computed live · sbdb

Loading sky survey…
🌌 View in 3D star map

Live ephemeris

This object moves — fetching its current position…

Score breakdown

· 3 badges
9 pts · Trash
Trash 15 pts → Common
  • Near-Earth object +5
  • Amor: shadows Earth's orbit from outside +4
  • Catalogue designation only +0
Total score 9

6 more points to reach Common.

Badges

  • Near-Earth object · +5
  • Catalogue designation only
  • 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 1.27 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 1.27 and 2.83 AU from the Sun.

Sense of scale

  • Sense of scale. In everyday terms it is about 3.9 football pitches across.

Standing on it

  • Don't jump. Escape velocity here is only around 0.25 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 408 metres across.

What's in a name

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

Properties

aphelion au
2.83
designation
2001 SJ9
eccentricity
0.379
full name
(2001 SJ9)
h mag
19.7
inclination
20.26
mean motion deg day
0.335
moid au
0.273
name
2001 SJ9
number only
yes
orbit class
AMO
perihelion au
1.275
semi major au
2.053

About 2001 SJ9

2001 SJ9 is a trash neo. It swings within 1.275 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, 2001 SJ9 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 2001 SJ9 is a trash neo

2001 SJ9 scores 9 points on Spacedle's rarity scale, which places it in the trash tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Near-Earth object, Catalogue designation only 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.