NEAR EARTH OBJECT TALLY
The numbers of Near Earth Objects recorded below are those listed
by the Minor Planet Center at the dates in question.
The four divisions are:
The total number of NEOs is the sum of ATENS, APOLLOS and AMORS. Note
that all PHAs are also APOLLOS, but not all APOLLOS are PHAs.
- ATENS - asteroids whose orbit lies wholly inside the Earth's orbit.
- APOLLOS - asteroids whose orbit crosses the Earth's orbit.
- AMORS - asteroids whose orbit crosses the orbit of Mars but not
that of the Earth.
- PHAs - Potentially Hazardous Asteroids are those asteroids with
a possibility of colliding with Earth at sometime in the future.
2007 December 31
| ATENS || APOLLOS || AMORS || PHAs
TOTAL NEOs = 5041