About (99913) 1997 CZ5
(99913) 1997 CZ5 is a trash asteroid. It has spectral type S and swings within 1.379 AU of the Sun at perihelion.
A Mars-crosser: its orbit reaches in far enough to cut clean across the path of Mars.
Trash asteroid 10 EP
(99913) 1997 CZ5
Position computed live · sbdb
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Live ephemeris
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Score breakdown
· 4 badgesTrash 15 pts → Common
- Mars-crosser +5
- Stony asteroid +4
- Asteroid +1
- Catalogue designation only +0
Total score 10
5 more points to reach Common.
Badges
- Asteroid · +1
- Catalogue designation only
- Mars-crosser · +5
- Stony asteroid · +4
Trivia
What it actually is
- Its orbit family. A Mars-crosser: its orbit reaches in far enough to cut clean across the path of Mars.
- Closest approach. At its nearest it comes within 1.38 AU of the Sun — inside the orbit of Mars.
- One lap. A single orbit around the Sun takes it about 3.5 years.
- How far it roams. Its orbit swings between 1.38 and 3.2 AU from the Sun.
Sense of scale
- Sense of scale. In everyday terms it is roughly 0.8× the height of Mount Everest.
By the numbers
- Estimated size. Nobody has measured its size directly. Assuming it reflects light like a typical asteroid, its brightness implies something roughly 7.5 km across.
What's in a name
- Designation. Known only by its catalogue designation — no name yet.
Properties
- aphelion au
- 3.21
- designation
- 99913
- eccentricity
- 0.3983
- full name
- 99913 (1997 CZ5)
- h mag
- 13.39
- inclination
- 24.96
- mean motion deg day
- 0.284
- moid au
- 0.4
- name
- (99913) 1997 CZ5
- number only
- yes
- orbit class
- MCA
- perihelion au
- 1.379
- rotation period h
- 2.833
- semi major au
- 2.292
- spec taxonomy
- S
- spect
- S
How to see it
Like any astronomical target, (99913) 1997 CZ5 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 (99913) 1997 CZ5 is a trash asteroid
(99913) 1997 CZ5 scores 10 points on Spacedle's rarity scale, which places it in the trash tier. Another 5 points would lift it into a rarer tier.
That score comes from 4 science badges — Asteroid, Catalogue designation only, Mars-crosser 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.