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Doubles in session


Current system
18042-2544
RCH 4


Nearby doubles
5' : 18041-2540
OCC1037

13' : 18051-2543
OCC1038

14' : 18052-2544
RCH 5AB

16' : 18031-2545
RST3152

17' : 18040-2529
HDO 148

17' : 18031-2535
RCH 3

19' : 18043-2603
J 1735

19' : 18056-2541
OCC1040

21' : 18029-2533
OCC1033AB

21' : 18034-2526
OCC1034

22' : 18057-2541
OCC1042

22' : 18041-2523
OCC1036AB

22' : 18027-2550
OCC1032

23' : 18036-2523
OCC1035

24' : 18025-2539
OCC1031

27' : 18024-2556
OCC1030

30' : 18024-2601
B 372

36' : 18064-2525
RCH 6

37' : 18057-2514
OCC1041AB

39' : 18028-2617
B 373

45' : 18016-2612
TDT 640

47' : 18076-2534
OCC1043

54' : 18008-2611
I 1016

59' : 18023-2452
RST3148

60' : 18035-2643
BRT3057

66' : 18089-2528
WNO 21



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18042-2544 RCH 4

 
 
18h 04m 12.09s -25° 44' 25.7" P.A. 354.00 sep 3.9 mag 5.59,9.41
 
 
Coord 2000 18042-2544 Discov num RCH   4 Comp Coord arcsec 2000 18 04 12.09 -25 44 25.7
Date first 1998 Date last 2009 Obs 2
Pa first 356 Pa last 354 P.A. Now (θ) 354°
Sep first 3.2 Sep last 3.94 Sep. Now (ρ) 3.94"
Mag pri 5.59 Mag sec 9.41 delta mag (ΔM) 3.82 Spectral class
Pri motion ra Sec motion ra
Pri motion dec Sec motion dec
Notes K (K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Gaia DR2 4064144934561695744
 
 
WDS 18042-2544 RCH 4 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Rch1994a O j Richichi, A., Calamai, G. & Leinert, Ch. 1994A&A...286..829R
Rch1994a A&A 286, 829, 1994
Rch1994b O j Richichi, A., Leinert, Ch., Jameson, R. & Zinnecker, H. 1994A&A...287..145R
Rch1994b A&A 287, 145, 1994
Rch1996 O j Richichi, A., Calamai, G., Leinert, Ch., Stecklum, B. & Trunkovsky, E. 1996A&A...309..163R
Rch1996 A&A 309, 163, 1996
Rch1997 O j Richichi, A., Calamai, G., Leinert, Ch. & Stecklum, B. 1997A&A...322..202R
Rch1997 A&A 322, 202, 1997
Rch1999a Si j Richichi, A., Koehler, R., Woitas, J., & Leinert, Ch. 1999A&A...346..501R
Rch1999a +O A&A 346, 501, 1999
Rch1999b O j Richichi, A., Ragland, S., Calamai, G., Baffa, C., Stecklum, B., & Richter, S. 1999A&A...350..491R
Rch1999b A&A 350, 491, 1999
Rch2000a O j Richichi, A., Ragland, S., Calamai, G., Richter, S., & Stecklum, B. 2000A&A...361..594R
Rch2000a A&A 361, 594, 2000
Rch2000b O j Richichi, A. 2000A&A...364..225R
Rch2000b A&A 364, 225, 2000
Rch2000c O - Richichi, A. & Leinert, C. 2000IAUS..200P..83R
Rch2000c IAU Symp. 200, 83, 2000
Rch2002 O j Richichi, A., Calamai, G., & Stecklum, B. 2002A&A...382..178R
Rch2002 A&A 382, 178, 2002
Rch2008a O - Richichi, A., Fors, O., Mason, E., Stegmeier, J., & Chandrasekhar, T. 2008A&A...489.1399R
Rch2008a A&A 489, 1399, 2008
Rch2008b O - Richichi, A., Fors, O., & Mason, E. 2008A&A...489.1441R
Rch2008b A&A 489, 1441, 2008
Rch2010 O j Richichi, A., Fors, O., Chen, W.-P., & Mason, E. 2010A&A...522A..65R
Rch2010 A&A 522, A65, 2010
Rch2011 O j Richichi, A., Chen, W.P., Fors, O., & Wang, P.F. 2011A&A...532A.101R
Rch2011 A&A 532, A101, 2011
Rch2012 O j Richichi, A., Chen, W.-P., Cusano, F., Fors, O., Moerchen, M., & Komonjinda, S. 2012A&A...541A..96R
Rch2012 A&A 541, A96, 2012
Rch2012b O j Richichi, A., Fors, O., Cusano, F., & Moerchen, M. 2012ApJS..203...33R
Rch2012b ApJS 203, 33, 2012
Rch2013 O j Richichi, A., Fors, O., Cusano, F., & Moerchen, M. 2013AJ....146...59R
Rch2013 AJ 146, 59, 2013
Rch2014 O j Richichi, A., Fors, O., Cusano, F., & Ivanov, V.D. 2014AJ....147...57R
Rch2014 AJ 147, 57, 2014
Rch2014b O j Richichi, A., Irawati, P., Soonthornthum, B., Dhillon, V.S., & Marsh, T.R. 2014AJ....148..100R
Rch2014b AJ 148, 100, 2014
Rch2016 O j Richichi, A., Tasuya, O., Irawati, P., Soonthornthum, B., Dhillon, V.S., & 2016AJ....151...10R
Rch2016 Marsh, T.R.
Rch2016 AJ 151, 10, 2016
Rch2017 O j Richichi, A., Tasuya, O., Irawati, P., & Yadav, R.K. 2017AJ....154..215R
Rch2017 AJ 154, 215, 2017
Rch2020 O j Richichi, A., Sharma, S., Sinha, T., Pandey, R., Ghosh, A., Ojha, D.K. & 2020MNRAS.498.2263R
Rch2020 Pandey, A.K.
Rch2020 MNRAS 498, 2263, 2020
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18042-2544 RCH 4 2009 1 354 3.9 5.59 9.41 K 180412.09-254425.7

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 18042-2544 RCH 4 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18042-2544 RCH 4 : MEASURES
 
 
No records found.

 
 
WDS 18042-2544 : VIRTUAL EYEPIECE
 
 

18042-2544 RCH 4A mag 5.59 18042-2544 RCH 4B sep 3.9 P.A. 354.60 mag 9.41 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18042-2544 : ALADIN DSS IMAGE @ 18h 04m 12.09s -25° 44' 25.7"
 
 
 
 
WDS 18042-2544 RCH 4 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18042-2544 RCH 4 distance=0' 18041-2540 OCC1037 distance=5' 18051-2543 OCC1038 distance=13' 18052-2544 RCH 5AB distance=14' 18052-2544 OCC1039Aa,Ab distance=14' 18031-2545 RST3152 distance=16' 18040-2529 HDO 148 distance=17' 18031-2535 RCH 3 distance=17' 18043-2603 J 1735 distance=19' 18056-2541 OCC1040 distance=19' 18029-2533 OCC1033AB distance=21' 18029-2533 OCC1033AC distance=21' 18034-2526 OCC1034 distance=21' 18057-2541 OCC1042 distance=22' 18041-2523 OCC1036AB distance=22' 18041-2523 OCC1036AC distance=22' 18027-2550 OCC1032 distance=22' 18036-2523 OCC1035 distance=23' 18025-2539 OCC1031 distance=24' 18024-2556 OCC1030 distance=27' 18024-2601 B 372 distance=30' 18064-2525 RCH 6 distance=36' 18057-2514 OCC1041AB distance=37' 18057-2514 OCC1041AC distance=37' 18028-2617 B 373 distance=39' 18016-2612 TDT 640 distance=45' 18076-2534 OCC1043 distance=47' 18008-2611 I 1016 distance=54' 18023-2452 RST3148 distance=59' 18035-2643 BRT3057 distance=60' 18089-2528 WNO 21 distance=66' 17593-2559 B 369 distance=67' 17589-2548 RST3142 distance=72' 17589-2545 RST3141 distance=72' 18093-2607 HDS2560Aa,Ab distance=72' 18093-2607 B 379AB distance=72' 18093-2607 B 379AC distance=72' 17586-2556 B 2847 distance=77' 18060-2659 I 1017 distance=78' 17598-2637 BRT3053 distance=79' 18092-2504 J 2196 distance=79' 18095-2621 B 381 distance=81' 18044-2423 RBR 8 distance=82' 18050-2705 OCC 89 distance=82' 18037-2423 AEN 1AB distance=83' 18037-2423 SBE 1Aa,Ab distance=83' 18028-2705 HLD 32AB distance=83' 18028-2705 FOX 218AC distance=83' 18039-2422 SNA 78 distance=83' 18044-2421 TDT 662 distance=84' 18032-2707 J 1592AB distance=84' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 18042-2544 RCH 4 354 3.9
Show 18041-2540 OCC1037 -1 0.1 5
Show 18051-2543 OCC1038 -1 0.0 13
Show 18052-2544 RCH 5 AB 35 2.3 14
Show 18052-2544 OCC1039 Aa,Ab -1 0.0 14
Show 18031-2545 RST3152 244 0.7 16
Show 18040-2529 HDO 148 15 4.6 17
Show 18031-2535 RCH 3 359 0.0 17
Show 18043-2603 J 1735 262 5.9 19
Show 18056-2541 OCC1040 -1 0.0 19
Show 18029-2533 OCC1033 AB -1 0.0 21
Show 18029-2533 OCC1033 AC -1 0.1 21
Show 18034-2526 OCC1034 -1 0.0 21
Show 18057-2541 OCC1042 -1 0.0 22
Show 18041-2523 OCC1036 AB -1 0.0 22
Show 18041-2523 OCC1036 AC -1 0.0 22
Show 18027-2550 OCC1032 -1 0.0 22
Show 18036-2523 OCC1035 -1 0.0 23
Show 18025-2539 OCC1031 -1 0.0 24
Show 18024-2556 OCC1030 -1 0.0 27
Show 18024-2601 B 372 35 0.8 30
Show 18064-2525 RCH 6 208 2.3 36
Show 18057-2514 OCC1041 AB -1 0.0 37
Show 18057-2514 OCC1041 AC -1 0.0 37
Show 18028-2617 B 373 325 5.8 39
Show 18016-2612 TDT 640 316 0.4 45
Show 18076-2534 OCC1043 -1 0.0 47
Show 18008-2611 I 1016 26 1.6 54
Show 18023-2452 RST3148 135 0.5 59
Show 18035-2643 BRT3057 184 4.3 60
Show 18089-2528 WNO 21 64 13.5 66
Show 17593-2559 B 369 0.3 67
Show 17589-2548 RST3142 288 7.9 72
Show 17589-2545 RST3141 83 1.2 72
Show 18093-2607 HDS2560 Aa,Ab 344 1.3 72
Show 18093-2607 B 379 AB 1 28.8 72
Show 18093-2607 B 379 AC 3 17.0 72
Show 17586-2556 B 2847 97 9.2 77
Show 18060-2659 I 1017 84 2.1 78
Show 17598-2637 BRT3053 154 4.3 79
Show 18092-2504 J 2196 123 3.3 79
Show 18095-2621 B 381 50 0.2 81
Show 18044-2423 RBR 8 318 3.1 82
Show 18050-2705 OCC 89 -1 0.1 82
Show 18037-2423 AEN 1 AB 9 3.5 83
Show 18037-2423 SBE 1 Aa,Ab 222 0.0 83
Show 18028-2705 HLD 32 AB 101 5.2 83
Show 18028-2705 FOX 218 AC 67 41.9 83
Show 18039-2422 SNA 78 69 0.0 83
Show 18044-2421 TDT 662 121 1.8 84
Show 18032-2707 J 1592 AB 351 8.0 84

 
 
WDS 18042-2544 : COMPONENTS
 
 
  A
B pa=354.6°
sep=3.94"
 
 
18042-2544 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 180412.09-254425.7 Mag 5.59
 
 
18042-2544 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 180412.06-254421.8 Mag 9.41 Calc delta mag 3.82
Calc coord yes