システム変換式
IRSF+SIRIUS
※2003年6月24日改訂。
詳しくはこちら。
(J-H)CIT = (0.980+/-0.010)×(J-H)IRSF + (0.029+/-0.013) ;
for (J-H)IRSF > 0.35
(J-H)CIT = (1.047+/-0.003)×(J-H)IRSF ;
for (J-H)IRSF < 0.35
(H-K)CIT = (0.912+/-0.020)×(H-Ks)IRSF
(J-K)CIT = (0.963+/-0.008)×(J-Ks)IRSF + (0.015+/-0.014) ;
for (J-Ks)IRSF > 0.45
(J-K)CIT = (1.009+/-0.003)×(J-Ks)IRSF ;
for (J-Ks)IRSF < 0.45
JCIT = JIRSF - 0.035×(J-Ks)IRSF + 0.015 ;
for (J-Ks)IRSF > 0.45
JCIT = JIRSF ;
for (J-Ks)IRSF < 0.45
HCIT = JCIT - (J-H)CIT
KCIT = JCIT - (J-K)CIT
Jの観測がない場合 :
HCIT = HIRSF - 0.074×(H-Ks)IRSF
KCIT = HCIT - (H-K)CIT
UH88+SIRIUS
(J-H)CIT = (1.037+/-0.021)×(J-H)UH - (0.002+/-0.017)
(H-K)CIT = (0.979+/-0.025)×(H-K)UH - (0.013+/-0.018)
(J-K)CIT = (1.055+/-0.014)×(J-K)UH - (0.002+/-0.022)
JCIT = JUH - (0.013+/-0.017)×(J-K)UH + (0.012+/-0.030)
HCIT = HUH - (0.029+/-0.029)×(J-H)UH + (0.007+/-0.033)
KCIT = KUH - (0.024+/-0.020)×(J-K)UH + (0.018+/-0.035)
※2001年8月31日のデ-タを使用。