This object moves — fetching its current position…
Score breakdown
· 5 badges
25 pts · Uncommon
Uncommon34 pts → Rare
Potentially hazardous+12
Near-Earth object+5
Apollo: crosses Earth's orbit+4
Stony asteroid+4
Catalogue designation only+0
Total score25
9 more points to reach Rare.
Badges
🌠Near-Earth object· +5
⚠️Potentially hazardous· +12
🔢Catalogue designation only
🏛️Apollo: crosses Earth's orbit· +4
🧗Stony asteroid· +4
✨ Trivia
Handle with care
🛡️What 'hazardous' means. 'Potentially hazardous' is bookkeeping, not a prediction: it means the orbit passes within 0.05 AU of Earth's and the body is big enough to matter. Nothing on that list is known to be on a collision course.
☄️If it ever hit. A rock this size arriving at a typical 20 km/s would release around 2611 megatons — about 52.2 times the largest bomb ever detonated.
What it actually is
🛸Its orbit family. An Apollo-class object: its orbit is wider than Earth's but crosses it. Most known Earth-crossers belong to this family.
🌞Closest approach. At its nearest it comes within 0.4 AU of the Sun — inside the orbit of Venus.
🔁One lap. A single orbit around the Sun takes it about 1.5 years.
🥏How far it roams. Its orbit swings between 0.39 and 2.25 AU from the Sun.
Sense of scale
🧱Sense of scale. In everyday terms it is about 3.3 football pitches across.
Standing on it
🔥Sunlight there. At closest approach the Sun beats down about 6.4 times harder than it ever does on Earth.
Properties
aphelion au
2.25
designation
508774
eccentricity
0.7017
full name
508774 (1999 JE1)
h mag
20.08
inclination
20.91
mean motion deg day
0.6476
moid au
0.0246
name
(508774) 1999 JE1
number only
yes
orbit class
APO
perihelion au
0.395
pha
yes
semi major au
1.323
spec taxonomy
Sq
spect
Sq
About (508774) 1999 JE1
(508774) 1999 JE1 is an uncommon neo. It has spectral type Sq and swings within 0.395 AU of the Sun at perihelion.
An Apollo-class object: its orbit is wider than Earth's but crosses it. Most known Earth-crossers belong to this family.
How to see it
Like any astronomical target, (508774) 1999 JE1 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 (508774) 1999 JE1 is an uncommon neo
(508774) 1999 JE1 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.
That score comes from 5 science badges — Near-Earth object, Potentially hazardous, Catalogue designation only, Apollo: crosses Earth's orbit 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.