SIMBAD references

We present a set of 58 stars with JHK standard values on the CIT system and with a suitable magnitude range for use with array detectors on small- to moderate-size telescopes. Each final value is based on six to 47 measures (with a mean of 17) obtained on separate nights with the US Naval Observatory (USNO) NICMOS3 (HgCdTe) camera. The objects include 20 primary CIT standards from Elias et al. and 38 secondary sources selected from the SAAO and UKIRT standards lists, cover a K-magnitude range between 6.0 and 10.8, and lie north of declination -20°. The stars were reduced to the CIT system as defined by Elias et al., producing a USNO system that is identical to the near-infrared CIT system. This work densifies the original CIT system by nearly a factor of 3 and extends its range by about 3 mag. The SAAO and UKIRT standards are also compared with the CIT system.