# IBVS 2213-t1.txt
#IAU COMMISSION 27 UNPUBLISHED DATA FILE 106
#IBVSdataKey: photometry
#Object: HD 1833
#Author: Lines, R. D.; Henry, G. W.; Sherlin, J.; Hall, D. S.
#Comment: NOT THE WHOLE FILE 106 - JUST PARTS RELEVANT TO IBVS 2213
#Comment: RETYPED FROM MANUSCRIPT - MIGHT CONTAIN ERRORS!
#Comment: The last column(s) of characters of the photocopy used
#Comment: were often missing or unreadable.


              IAU COMMISSION 27 - UNPUBLISHED DATA FILE #106

                  HD 1833, 37847, 185510, 190540, 205249


Photoelectric data for these five new variables are presented.
These stars are strongly suspected to be RS CVn binaries.
Complete information can be obtained from IBVS, # 2213 - 2217.


14 pages, including cover sheet         Douglas S. Hall
                                        A. J. Dyer Observatory
                                        Box 1803
                                        Vanderbilt University
                                        NASHVILLE, TN 37235




Variable = HD 1833     Kitt Peak National Observatory       page
Comparison = HD 1680   Observer = Gregory W. Henry          1 of 5


JD (hel.)	Delta V		Delta B
 2444506.7794	-0.648		
	.7824	-0.648		
	.7852	-0.649		
     509.8608	-0.618		
	.8631	-0.621		
	.8653	-0.619		
     510.8473	-0.614		-0.358
	.8514	-0.611		-0.360
	.8553	-0.604		-0.356
     511.7690	-0.604
	.7712	-0.600
	.7734	-0.603
     512.7533	-0.595		-0.333
	.7573	-0.589		-0.326
	.7615	-0.589		-0.336
     513.7571	-0.581		-0.325
	.7610	-0.579		-0.322
	.7650	-0.585		-0.319



Variable = HD 1833     Kitt Peak National Observatory       page
Comparison = HD 1680   Observer = Gregory W. Henry          2 of 5


JD (hel.)	Delta V	
 2444526.7771	-0.662
	.7799	-0.660
	.7827	-0.664
     535.7009	-0.611
	.7036	-0.613
	.7063	-0.614
     549.6829	-0.580
	.6854	-0.578
	.6879	-0.579
     550.7233	-0.588
	.7259	-0.580
	.7284	-0.586
     554.6309	-0.629
	.6333	-0.631
	.6357	-0.627
     555.6968	-0.644
	.6992	-0.641
	.7016	-0.636
     605.5039	-0.623
	.5062	-0.626
	.5085	-0.633



Variable = HD 1833     Lines Observatory                    page
Comparison = HD 1680   Observer = Richard D. Lines          3 of 5


JD (hel.)	Delta V		JD (hel.)	Delta ?
 2444845.9153	-0.599		 2444885.7794	-0.58?
	.9233	-0.621			.7834	-0.56?
	.9293	-0.619			.7864	-0.58?
     849.9154	-0.611		     886.7724	-0.57?
	.9204	-0.614			.7744	-0.58?
	.9294	-0.610			.7794	-0.57?
     858.8736	-0.572		     887.7644	-0.59?
	.8796	-0.569			.7674	-0.57?
	.8866	-0.581			.7724	-0.57?
     859.8666	-0.581		     897.7770	-0.59?
	.8706	-0.591			.7790	-0.61?
	.8746	-0.588			.7820	-0.60?
     867.8377	-0.628		     898.7459	-0.609
	.8427	-0.629			.7489	-0.61?
	.8457	-0.632			.7539	-0.60?
     868.8367	-0.645		     899.7449	-0.62?
	.8407	-0.639			.7469	-0.618
	.8447	-0.637			.7499	-0.61?
     875.8127	-0.673		     900.7338	-0.62?
	.8157	-0.661			.7368	-0.62?
	.8197	-0.669			.7388	-0.62?
     881.7995	-0.614		     901.7248	-0.64?
	.8045	-0.614			.7288	-0.64?
	.8075	-0.621			.7328	-0.61?
     884.7865	-0.591			.7358	-0.63?
	.7925	-0.595
	.7955	-0.585



Variable = HD 1833     Lines Observatory                    page
Comparison = HD 1680   Observer = Richard D. Lines          4 of 5


JD (hel.)	Delta V	
 2444903.7237	-0.640
	.7297	-0.640
	.7327	-0.632
     908.7054	-0.653
	.7104	-0.642
	.7124	-0.599
     909.7103	-0.667
	.7163	-0.669
	.7203	-0.668
     910.7412	-0.658
	.7442	-0.658
	.7462	-0.647
     911.7062	-0.651
	.7082	-0.644
	.7112	-0.667
     919.6846	-0.578
	.6876	-0.575
	.6916	-0.592
     920.6785	-0.584
	.6815	-0.587
	.6845	-0.592
     928.6919	-0.554
	.6949	-0.570



Variable = HD 1833     Cloudcroft Observatory               page
Comparison = HD 1680   Observer = Gregory W. Henry          5 of 5
                                  Jerry Sherlin


JD (hel.)	Delta V		JD (hel.)	Delta ?
 2444872.7348	-0.645		 2444996.5711	-0.57?
	.7363	-0.639			.5729	-0.57?
	.7379	-0.643			.5744	-0.57?
     873.7589	-0.652		 2445153.9427	-0.63?
	.7602	-0.650			.9442	-0.63?
	.7617	-0.651			.9456	-0.63?
     874.7044	-0.665		     160.9521	-0.5??
	.7059	-0.658			.9536	-0.5??
	.7073	-0.657
     959.6883	-0.551
	.6908	-0.555
	.6926	-0.562
     967.6749	-0.615
	.6775	-0.615
	.6793	-0.615
	.6807	-0.614
	.6835	-0.617
     973.6070	-0.615
	.6094	-0.624
	.6121	-0.604
     977.6052	-0.643
	.6075	-0.640
	.6097	-0.645
     995.5694	-0.580
	.5720	-0.582
	.5744	-0.584