  We are conducting a survey using twilight time on the Dark Energy Camera with
the Blanco 4m telescope in Chile to look for objects interior to Earth's and
Venus' orbits. To date we have discovered two rare Atira/Apohele asteroids,
2021 LJ4 and 2021 PH27, which have orbits completely interior to Earth's orbit.
We also discovered one new Apollo type Near Earth Object (NEO) that crosses
Earth's orbit, 2022 AP7. Two of the discoveries likely have diameters greater
than 1 km. 2022 AP7 is likely the largest Potentially Hazardous Asteroid (PHA)
discovered in about eight years. To date we have covered 624 square degrees of
sky near to and interior to the orbit of Venus. The average images go to 21.3
mags in the r-band, with the best images near 22nd mag. Our new discovery 2021
PH27 has the smallest semi-major axis known for an asteroid, 0.4617 au, and the
largest general relativistic effects (53 arcseconds/century) known for any body
in the Solar System. The survey has detected about 15 percent of all known
Atira NEOs. We put strong constraints on any stable population of Venus
co-orbital resonance objects existing, as well as the Atira and Vatira asteroid
classes. These interior asteroid populations are important to complete the
census of asteroids near Earth, including some of the most likely Earth
impactors that cannot easily be discovered in other surveys. Comparing the
actual population of asteroids found interior to Earth and Venus with those
predicted to exist by extrapolating from the known population exterior to Earth
is important to better understand the origin, composition and structure of the
NEO population.
