08316+1806 HJ 2452 AB (The Cnc)

Coord 2000	08316+1806		Discov num	HJ 2452		Comp	AB		Coord arcsec 2000	08 31 35.72 +18 05 39.9
Date first	1831		Date last	2012		Obs	16
Pa first	61		Pa last	61.6		P.A. Now (θ)	61.6°
Sep first	60.0		Sep last	74.49		Sep. Now (ρ)	74.49"
Mag pri	5.53		Mag sec	11.77		delta mag (ΔM)	6.24		Spectral class	K5III (yellow-orange)
Pri motion ra	-060		Sec motion ra	+017
Pri motion dec	-057		Sec motion dec	-034
Notes	N L (See Notes, Linear solution)

rPM=0.971 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		97881	08 31 36 +18 05 40	OCC 690 Aa,Ab	1984	0	-1	0.1	6.40	6.40	0.00
Show	The Cnc	97881	08 31 36 +18 05 40	HJ 2452 AB	2012	16	62	74.5	5.53	11.77	6.24		<===
Show		97881	08 31 36 +18 05 40	SMR 12 AC	2009	4	214	344.6	5.53	10.50	4.97
Show		97881	08 31 36 +18 05 40	SMR 12 AD	2009	3	268	225.9	5.35	12.60	7.25

Quintuple system
4 estimated visually detectable stars in this system

Name	The Cnc		Var name	NSV4117 Cnc		Constellation	Cancer		SAO	97881
HIP	41822		Tycho2	1383-01642-1		Gaia DR2	659211857132536960		HD	72094
HR	3357		GC	11659		BD	BD+18 1963		Bayer	Theta Cancri
Bayer name	The Cnc		Flamsteed	31 Cancri		Flamsteed name	31 Cnc		FK5	2667
Distance	127.23		Distance ly	415.02		Bayer greek	θ Cnc

discov_num	notes	refcode
HJ 2452	the Cnc = 31 Cnc. Occultation double.
	AB: H 5 59.	MEv2010

refcode	metd	author	reference
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)

idgroup	discov	author
1	HJ	Herschel, J.F.W.
50	OCC	Taylor, G.E., O'Leary, B., van Fladern, T.C. Bartholdi, P., Owen, F.,
50	OCC	Hubbard, W.B., Smith, B.A., Smith, S.A., Fallon, F.W. Devinney, E.J. & Oliver, J.
55	OCC	Dunham, D.W., Dunham, J.B., Binzel, R.P., Evans, D.S., Freuh, M., Henry, G.W.,
55	OCC	A'Hearn, M.A., Schnurr, R., Betts, R., Haynes, H., Orcutt, R., Bowell, E., et al.
58	OCC	Vasundhara, R., Jayakumar, K., Velu, C., Appakutty, M., Paranjpye, A.,
58	OCC	Kulkarni, H., Nitsure, P., Prabhunne, M. & Shah, K.
65	OCC	Lin, C.-L., Zhang, Z.-W., Chen, W.P., King, S.-K., Lin, H.-C., Bianco, F.B.,
65	OCC	Lehner, M.J., Coehlo, N., Wang, J.-H., Mondal, S., Alcock, C., Axelrod, T., et al.
66	OCC	Herald, D., Boyle, R., Dunham, D., Hirose, T., Maley, P., Timerson, B., Farris,
66	OCC	T., Frappa, E., Lecacheux, J., Hayamizu, T., Kozubal, M., Nolthenius, R., et al.
71	OCC	Loader, B., Asada, Y., Breit, D., Bradshaw, J., Gault, D., Herald, D., Iverson,
71	OCC	E., Ishida, M., Karasaki, H., Kashiwagura, M., Miyashita, K., Messner, S., et al.
74	OCC	Loader, B. Bradshaw, J., Breit, D., Gault, D., George, T., Herald, D., Iverson,
74	OCC	E., Ishida, M., Karasaki, H., Kashiwagura, M., Kenmotsu, K., Lowe, D., et al.
75	OCC	George, T., Timerson, B., Cooke, B., Degenhardt, S., Dunham, D.W., Messner, S.,
75	OCC	Suggs, R., Venable, R. & Warren, W.H.
76	OCC	George, T., Timerson, B., Beard, T., Blank, T., Dantowitz, R., Davis, J.,
76	OCC	di Cicco, D., Dunham, D.W., Hill, M., Sliski, A. & Sumner, R.
77	OCC	Bulder, H., Loader, B., Herald, D., Messner, S., Ling, A., Raab, H.,
77	OCC	Culbertson, B., Black, S., Ishida, M., Ohno, T., & Miyashita, K.
78	OCC	George, T., Timerson, B., Degenhardt, S., Bracken, C., Cadmus, R., Carcich, A.,
78	OCC	Centala, J., Modic, R., & Slauson, D.
79	OCC	Loader, B., Asada, Y., Bradshaw, J., Breit, D., Fuertes, J., Gault, D., George,T.,
79	OCC	Graham, P., Herald, D., Holenstein, B., Iverson, E., Ishida, M., et al.
80	OCC	George, T., Timerson, B., Brooks, J., Conrad, S., Dunham, J.B., Dunham, D.W.,
80	OCC	Jones,R., Lipka, T.R., Thomas, W., Warren, W.J., Jr., Wasson, R. & Wisniewski, J.
97	OCC	Loader, B., Bradshaw, J., Breit, D., Edens, E., Forbes, M., Gault, D., George, T.,
97	OCC	Haymes, T., Herald, D., Holenstein, B., Ito, T., Iverson, E., et al.
98	OCC	Soma, M., Hayamizu, T., Ishida, M., Owada, M., Ida, M., Aikawa, R., Hashimoto, A.,
98	OCC	Horaguchi, T., Kitazaki, K., Uchiyama, S., Uehara, S., Yaeza, A., et al.
99	OCC	Loader, B., Asai, A., Bardecker, J., Bradshaw, J., Breit, D., Buettner, D.,
99	OCC	Chad, C., Denyer, P., Edens, E., Forbes, M., Gault, D., George, T., et al.
102	OCC	Loader, B., Anderson, P., Asai, A., Bradshaw, J., Breit, D., Forbes, M.,
102	OCC	Gault, D., George, T., Haymes, T., Herald, D., Ishida, M., Kerr, S., et al.
105	OCC	Timerson, B., George, T., Bean, J., Blank, T., Bardecker, J., Dunham, D., Dunham,
105	OCC	J., Gimple, B., Maley, P., Anthony, S., Wiesenborn, C., Hunt, T., Sumner, R. &
105	OCC	Thomas, W.
106	OCC	Hirose, T., Ida, M., Yamamura, H., Uchiyama, S., Hashimoto, A., Aikawa, R.,
106	OCC	Terakubo, K., Sato, M. & Shima, K.
107	OCC	Loader, B., Asada, Y., Asai, A., Bardecker, J., Bourgeois, J., Bradshaw, J., Chad,
107	OCC	C., Ellington, C., Gault, D., Giacchini, B., Haymes, T., Herald, D., Ishida, M.,
107	OCC	Iverson, E., Kerr, S., Manek, J., McKay, G., Messner, S., Pratt, A., Sandy, R.,
107	OCC	Watanabe, H., Yamamura, H. & Yoshida, H.
110	OCC	Perello, C., Frappa, E., Janik, T., Kattentidt, B., Polak, J., Rottenborn, M. &
110	OCC	Selva, A.
115	OCC	Gault, D., Barry, T., Nosworthy, P., Hanna, W., Messner, S., Oesper, D., Dunford,
115	OCC	R., Trank, R., Preston, S. & Herald, D.
120	OCC	Frappa, E., Zeleny, P., Baruffetti, P., Bendjeddou, A., Bigi, M., Bouazara, O.,
120	OCC	Gacem, A., Khenifer, H.M., Mokhtari, L., Nosal, P., Rayane, H., Selimi, T.E.M.,
120	OCC	Sposetti, S. & Aissa, D.B.
121	OCC	Hayamizu, T., Soma, M., Watanabe, Hi., Asai, A., Watanable, Ha., Akira, A.,
121	OCC	Ida, M., Uchiyama, S., Nagata, T., Yamamura, H., Owada, M. & Yamashita, M.
128	SMR	Schlimmer, J.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
08316+1806	HJ 2452	AB	2009	14	63	72.2	5.35	10.00	K5III	NL	083135.72+180539.9
08316+1806	HJ 2452	AB	2012	16	62	74.5	5.35	10.00	K5III	NL	083135.72+180539.9

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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