I N S I D E T H I S I S S U E

May 2.147 122 133 6.4 –0.44 –1.76 –2.94 –3.46May 2.201 142 133 6.5 –0.40 –1.76 –2.95 –3.46May 2.220 148 133 6.5 –0.36 –1.76 –2.95 –3.45May 2.252 159 133 6.5 –0.38 –1.77 –2.94 –3.42May 2.271 166 133 6.5 –0.38 –1.76 –2.95 –3.42May 2.317 183 133 6.6 –0.40 –1.76 –2.91 –3.43May 2.344 191 133 6.6 –0.47 –1.80 –2.97 –3.49May 2.361 197 133 6.6 –0.34 –1.77 –2.94 –3.46May 9.082 38 136 12.2 –0.24 –1.49 –2.55 –3.01May 9.103 45 136 12.2 –0.27 –1.51 –2.58 –3.03May 9.229 88 136 12.3 –0.31 –1.62 –2.74 –3.25May 9.265 102 136 12.3 –0.38 –1.69 –2.79 –3.34May 20.082 300 141 20.5 0.05 –1.25 –2.42 –2.89May 20.107 309 141 20.5 0.06 –1.24 –2.43 –2.91May 20.141 321 141 20.5 0.11 –1.22 –2.43 –2.92May 20.167 330 141 20.5 0.09 –1.23 –2.42 –2.90May 20.201 342 142 20.5 0.06 –1.25 –2.42 –2.86May 20.224 350 142 20.6 0.09 –1.25 –2.41 –2.88Sep. 5.062 a 353 200 44.0 ––– 0.59 ––– –––2000Jan. 16.015 a 111 283 29.2 ––– 0.99 ––– –––March 5.043 a 352 313 21.2 ––– 1.18 ––– –––a The comparison star on the September 5 measurement was Sco; the comparison star forthe January 16 measurement was Cyg while And was the comparison star for the March5 measurement. The September 5, January 16 and March 5 measurements were made whenMars was at low elevations and were not used in computing the values in Table 3.Table IIISelected normalized magnitudes and solar phase angle coefficientsfor Mars in 1998-2000Filter Normalized Solar Phase Angle Mean ApparitionMagnitude Coefficient (mag/deg) MagnitudeB –0.30 ± 0.02 0.0185 ± 0.0010 –0.79 ± 0.02V –1.60 ± 0.02 0.0152 ± 0.0010 –2.09 ± 0.02R –2.68 ± 0.03 0.0110 ± 0.0010 –3.17 ± 0.03I –3.17 ± 0.03 0.0109 ± 0.0010 –3.66 ± 0.03Table IVNormalized magnitudes and colour indices for Mars during the 1993-99apparitions. The solar phase angle of Mars equals zero degrees for allvalues; data are from Schmude & Bruton (1994) and Schmude (1996, 1998)Apparition B (1,0) V (1,0) R (1,0) I (1,0) B–V V–R B–R1993 –0.23 –1.49 –2.60 –3.01 1.26 1.11 2.371995 –0.20 –1.54 –2.67 –3.14 1.34 1.13 2.471997 –0.26 –1.58 –2.72 –3.16 1.32 1.14 2.461999 –0.30 –1.60 –2.68 –3.17 1.30 1.08 2.38Table VDifference between maximum and minimum brightness of Mars as thatplanet rotates on its axis for different filters and in different years at = 0°Apparition B-filter V-filter R-filter I-filter1992–93 0.18 0.21 0.31 0.391994–95 0.21 0.19 0.23 0.421996–97 0.17 0.24 0.25 0.311998–99 0.20 0.24 0.40 0.44Average 0.19 0.22 0.30 0.39RICHARD W. SCHMUDE, Jr. grew up in Houston, Texas andgraduated from Texas A&M University in 1994 with a Ph.D degreein Chemistry under the guidance of Dr. Karl Gingerich. Since 1994,Richard has taught Chemistry, Astronomy and Physical Scienceat Gordon College in Barnesville, GA. He has attended GA’s inWindsor, Kingston, Toronto and Winnipeg, Canada. He has givenover 150 professional and community talks about Astronomy andChemistry. He is a member of the American Association of VariableStar Observers, The Association of Lunar and Planetary Observers,The Atlanta Astronomy Club, The Flint River Astronomy Club andthe Kingston Centre of the Royal Astronomical Society of Canada.December / décembre 2000 JRASC245