This object moves — fetching its current position…
Score breakdown
· 6 badges
33 pts · Uncommon
Uncommon34 pts → Rare
Potentially hazardous+12
Barely turning (over 100 hours)+8
Near-Earth object+5
Apollo: crosses Earth's orbit+4
Stony asteroid+4
Catalogue designation only+0
Total score33
1 more point to reach Rare.
Badges
🌠Near-Earth object· +5
⚠️Potentially hazardous· +12
🔢Catalogue designation only
🏛️Apollo: crosses Earth's orbit· +4
🐌Barely turning (over 100 hours)· +8
🧗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 712 thousand megatons — enough to devastate a region the size of a small country.
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 0.74 AU of the Sun — inside the orbit of Earth.
🔁One lap. A single orbit around the Sun takes it about 2.3 years.
🥏How far it roams. Its orbit swings between 0.74 and 2.78 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 1.34 m/s. A determined jump would launch you off it and into your own orbit around the Sun.
Properties
albedo
0.14
aphelion au
2.78
designation
86039
diameter km
2.22
eccentricity
0.5788
full name
86039 (1999 NC43)
h mag
15.94
inclination
7.13
mean motion deg day
0.4222
moid au
0.0248
name
(86039) 1999 NC43
number only
yes
orbit class
APO
perihelion au
0.741
pha
yes
rotation period h
122.2
semi major au
1.76
spec taxonomy
Q
spect
Q
About (86039) 1999 NC43
(86039) 1999 NC43 is an uncommon neo. It has spectral type Q and swings within 0.741 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, (86039) 1999 NC43 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 (86039) 1999 NC43 is an uncommon neo
(86039) 1999 NC43 scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.
That score comes from 6 science badges — Near-Earth object, Potentially hazardous, Catalogue designation only, Apollo: crosses Earth's orbit, Barely turning (over 100 hours) 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.