About 5645 (1990 SP)
5645 (1990 SP) is a common neo. It swings within 0.83 AU of the Sun at perihelion.
Roughly 1.7 km across.
Common neo 17 EP
5645 (1990 SP)
Position computed live · sbdb
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Live ephemeris
This object moves — fetching its current position…
Score breakdown
· 3 badgesCommon 24 pts → Uncommon
- Crosses Earth's orbit +12
- Near-Earth object +5
- Catalogue designation only +0
Total score 17
7 more points to reach Uncommon.
Badges
- Near-Earth object · +5
- Crosses Earth's orbit · +12
- Catalogue designation only
Trivia
How we found it
- Designation. Known only by its catalogue designation — no name yet.
Cosmic context
- Size. Roughly 1.7 km across.
- Ancient. A leftover from the Solar System's birth, older than every continent on Earth.
Properties
- diameter km
- 1.668
- eccentricity
- 0.3873
- h mag
- 17.23
- inclination
- 13.5
- name
- 5645 (1990 SP)
- number only
- yes
- orbit class
- APO
- perihelion au
- 0.8302
- semi major au
- 1.355
How to see it
Like any astronomical target, 5645 (1990 SP) 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 5645 (1990 SP) is a common neo
5645 (1990 SP) scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.
That score comes from 3 science badges — Near-Earth object, Crosses Earth's orbit and Catalogue designation only — 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.