Object name: NGC5857
Designation(s): NGC5857, NGC5859,
NGC 5857 and NGC 5859 are a pair of non-interacting galaxies. By redshift, they are very close neighbors though Tully Fisher measurements indicate they may be very widely separated. All Tully Fisher measurements for both were made the same way. Those listed for 5859 have three that put it much closer than redshift says, the fourth agrees with redshift measurements. Using the same system by the same authors the four measurements of 5857 agree quite well. If the closer Tully Fisher distances are used for 5859 then the two galaxies are about the same size. 5859 would be 120,000 light-years in diameter with NGC 5857 being 97,000 light-years in diameter. Using the far distance for 5859 its diameter is 174,000 light-years. That seems way too big to me. Until I learn differently I'm going to say the Tully Fisher measurement for NGC 5859 is more likely representative of its true distance and size.
Related Designation(s):2MASS J15072730+1935516, 2MASS J15072742+1935482, 2MASS J15073473+1934563, 2MASX J15072731+1935512, 2MASX J15073474+1934562, 2MASXi J1507273+193552, 2MASXi J1507347+193456, AKARI J1507346+193453, ASK 691128.0, ASK 691139.0, CGCG 106-005, CGCG 106-007, CGCG 1505.2+1947, CGCG 1505.3+1946, ECO 04895, ECO 04896, GALEXASC J150727.35+193552.6 , IRAS 15052+1946, IRAS F15052+1946, KPG 455A, KPG 455B, LGG 394:[G93] 002, LGG 394:[G93] 003, MAPS-NGP O_442_0351049, MCG +03-39-004, MCG +03-39-005, NGC 5857, NGC 5859, NGC5857, NGC5859, NSA 124071, NSA 165933, NVSS J150727+193556, NVSS J150734+193455, PGC 053995, PGC 054001, SDSS J150727.29+193551.9, SDSS J150734.74+193457.0, SDSS J150734.75+193456.6, SDSS J150734.75+193456.7, UGC 09724, UGC 09728, UZC J150727.3+193551, UZC J150734.8+193457, UZC-BGP 71A, UZC-BGP 71B, [M98j] 239 NED01, [M98j] 239 NED02, [PJY2015] 588023721784705045 , [TTL2012] 473756, [TTL2012] 473766, [WGB2006] 150512+19470_a, [WGB2006] 150512+19470_b,