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Based on a recessional velocity of 6120 km/sec, IC 3500 is about 285 million light years away. Given that and its apparent size of 0.75 by 0.45 arcmin, it is about 60 thousand light years across. The galaxy is listed as a member (VCC 1526) of the Virgo Cluster, but is not actually a member of the Cluster, since it is much further away.

Apparent size 0.95 by 0.85 arcmin. Listed as a member (VCC 1528) of the Virgo Cluster.

Apparent size 0.5 by 0.15 arcmin.

Per Dreyer, IC 3503 (Javelle 1225, 1860 RA 12 26 57, NPD 51 26.9) is "extremely faint, very small, brighter middle and nucleus". The position precesses to RA 12 33 47.8, Dec +37 46 44, nearly 0.7 arcmin south of the star listed above, and even farther from anything else. Given only that, one might wonder if the position involved a substantial recording or reducing error, and referred to some completely different place. However, per Corwin, a reduction of Javelle's "measurements with respect to the AC2000.2 position for his comparison star" yields a position almost dead on the star; so it appears that there was an error in the position Javelle used for the comparison star that carried over into the position for his #1225, and once that error was removed the identification became certain.

Per Dreyer, IC 3504 (Schwassmann 24, 1860 RA 12 27 01, NPD 82 20.5) is "extremely faint, very small, near 10th magnitude star". The position precesses to RA 12 34 08.1, Dec +06 53 08, practically on top of the star listed above, and the 11th magnitude star just to its north confirms the identification.

Apparent size 0.95 by 0.35 arcmin. Listed as a member (VCC 1542) of the Virgo Cluster, but much further away, so not really a member of the Cluster.

Apparent size 0.8 by 0.8 arcmin. Listed as a member (VCC 1539) of the Virgo Cluster.

Apparent size 0.4 by 0.35 arcmin. There is no type listed, so that was estimated from the galaxy's appearance in the closeup image below. No recessional velocities or distance estimates currently available.

Apparent size 0.85 by 0.7 arcmin.

Apparent size 1.0 by 0.65 arcmin. Listed as a member (VCC 1545) of the Virgo Cluster.

Apparent size 0.85 by 0.85 arcmin. Listed as a member (VCC 1549) of the Virgo Cluster.

Per Dreyer, IC 3511 (Wolf list IV #191, 1860 RA 12 27 13, NPD 61 52.7) is "very faint, small, irregular figure, nucleus". The position precesses to RA 12 34 10.1, Dec +27 20 57, just northeast of the star listed above. Per Corwin, a print of Wolf's plate shows the star as a faint nebula, so a small plate defect must have been involved; but the identification with the star is certain. There is a an 18th-magnitude galaxy just west of the star, but it does not appear on Wolf's plate, and has nothing to do with the IC designation.

Per Dreyer, IC 3512 (Wolf list IV #192, 1860 RA 12 27 13, NPD 61 51.9) is "very faint, small, irregular figure, nucleus". The position precesses to RA 12 34 10.1, Dec +27 21 45, just northeast of the star listed above. Per Corwin, a print of Wolf's plate shows the star as a faint nebula, so a small plate defect must have been involved; but the identification with the star is certain. SeeIC 3511 for an image.

Per Dreyer, IC 3513 (Wolf list IV #193, 1860 RA 12 27 15, NPD 61 53.9) is "very faint, small, irregular figure, nucleus". The position precesses to RA 12 34 12.1, Dec +27 19 45, just southeast of the star listed above. Per Corwin, a print of Wolf's plate shows the star as a faint nebula, so a small plate defect must have been involved; but the identification with the star is certain. SeeIC 3511 for an image.

Per Dreyer, IC 3514 (Wolf list IV #194, 1860 RA 12 27 19, NPD 62 31.7) is "very faint, very small, brighter middle, spiral". The position precesses to RA 12 34 16.5, Dec +26 41 57, just east of the double star listed above, and there is nothing else nearby saveIC 3508 (which see for an image). Per Corwin, Wolf's notes include a position angle that agrees with the relative positions of the stars, confirming the identification.

Apparent size 0.75 by 0.25 arcmin.

Apparent size 1.8 by 0.15 arcmin.

Apparent size 1.2 by 0.7 arcmin. Listed as a member (VCC 1566) of the Virgo Cluster.

Apparent size 1.5 by 0.7 arcmin. Listed as a member (VCC 1567) of the Virgo Cluster.

Apparent size 0.8 by 0.55 arcmin. Listed as a member (VCC 1577) of the Virgo Cluster.

Apparent size 0.95 by 0.5 arcmin. Listed as a member (VCC 1569) of the Virgo Cluster.

Apparent size 1.6 by 1.1 arcmin. Listed as a member (VCC 1575) of the Virgo Cluster.

Apparent size 1.5 by 0.7 arcmin. Listed as a member (VCC 1585) of the Virgo Cluster.

Apparent size 0.4 by 0.35 arcmin.

Per Dreyer, IC 3524 (Schwassmann 290, 1860 RA 12 27 39, NPD 74 59.9) is "considerably faint, small, possibly a 12.5 magnitude star". The position precesses to RA 12 34 42.7, Dec +14 13 46, an arcmin south of the star listed above, which (given the reference to a 12.5 magnitude star) is the most likely candidate for the IC object despite the positional error. As it happens most of the offset is due to Dreyer making a one arcmin blunder in converting Schwassmann's position (which was given as a 1900 RA and Dec) to the 1900 RA and NPD used in the IC, and from there to the 1860 RA and NPD used in the NGC and IC. The correct 1860 NPD was 74 58.9; using either the corrected 1860 position or Schwassmann's original position (1900 RA 12 29 40.45, Dec +14 47 50.6) yields a modern position less than 0.1 arcmin north of the star, so the identification is certain. (I greatly appreciate Dr. Corwin's providing me with Schwassmann's original notes.)Note:PGC 41859, the galaxy a little over an arcmin south of the star, is sometimes listed as IC 3524, but is far too faint for Schwassmann to have taken for a 12.5 magnitude star.

Apparent size 0.5 by 0.4 arcmin. Listed as a member (VCC 1582) of the Virgo Cluster.

Apparent size 0.6 by 0.4 arcmin.

Per Dreyer, IC 3526 (Wolf list IV #197, 1860 RA 12 27 43, NPD 63 32.6) is "faint, very small, round, brighter middle". The position precesses to RA 12 34 40.9, Dec +25 41 03, almost exactly on the pair of stars listed above, so the identification is certain. (Corwin notes that the pair is clearly seen but appears to be only a single star on a print of Wolf's plate.)

Per Dreyer, IC 3527 (Wolf list IV #198, 1860 RA 12 27 45, NPD 63 04.2) is "faint, very small, round, brighter middle starlike". The position precesses to RA 12 34 42.6, Dec +26 09 27, just north of the brighter member of the pair of stars listed above, so the identification is certain. (As in the case ofIC 3526, Corwin notes that the pair is clearly seen but appears to be only a single star on a print of Wolf's plate.)

Apparent size 0.5 by 0.45 arcmin. Listed as a member (VCC 1593) of the Virgo Cluster, but not actually a member, since much further away.

Per Dreyer, IC 3529 (Wolf list IV #199, 1860 RA 12 27 52, NPD 63 31.7) is "faint, very small, round, brighter middle". The position precesses to RA 12 34 49.8, Dec +25 41 58, right on the star listed above, so the identification is certain. (Corwin notes that the star is clearly seen on a print of Wolf's plate.) SeeIC 3526 for an image.

Apparent size 1.3 by 0.95 arcmin.

Apparent size 0.25 by 0.25 arcmin.

Per Dreyer, IC 3532 (Wolf list IV #201, 1860 RA 12 28 00, NPD 63 20.8) is "very faint, very small, brighter middle, spiral". The position precesses to RA 12 34 57.6, Dec +25 52 52, just north of the pair listed above, so the identification is certain. (Per Corwin, this is a single object on a print of Wolf's plate; so the IC entry definitely includes both stars.)

Apparent size 0.45 by 0.25 arcmin.

Apparent size 0.45 by 0.45 arcmin.

Per Dreyer, IC 3535 (Wolf list IV #203, 1860 RA 12 28 13, NPD 63 29.8) is "faint, very small, round, brighter middle". The position precesses to RA 12 35 10.6, Dec +25 43 52, right on the star listed above, so the identification is certain. (Corwin states that the star is clearly visible on a print of Wolf's plate.) SeeIC 3533 for an image.

Apparent size 0.9 by 0.2 arcmin.

Per Dreyer, IC 3537 (Schwassmann 69, 1860 RA 12 28 16, NPD 81 34.5) is "very faint, small, questionable". The position precesses to RA 12 35 22.6, Dec +07 39 10, right on the star listed above, so the identification is certain.

Per Dreyer, IC 3538 (Wolf list IV #205, 1860 RA 12 28 18, NPD 62 59.5) is "extremely faint, small, irregular figure". The position precesses to RA 12 35 15.3, Dec +26 14 10, almost on the star listed above, so the identification is certain.

Per Dreyer, IC 3539 (Wolf list IV #206, 1860 RA 12 28 21, NPD 65 14.7) is "extremely faint, small, round, brighter middle, 13th magnitude star to southwest". The position precesses to RA 12 35 19.5, Dec +23 58 58, practically on the star listed above, and the brighter (albeit 15th-magnitude) star to the southwest confirms the identification.

Apparent size 0.75 by 0.75 arcmin. Listed as a member (VCC 1614) of the Virgo Cluster.

Per Dreyer, IC 3541 (Wolf list IV #207, 1860 RA 12 28 24, NPD 65 15.2) is "extremely faint, small, round, 14th magnitude star to northwest". The position precesses to RA 12 35 22.5, Dec +23 58 29, about 0.2 arcmin east of the star listed above, but the star to the northwest confirms the identification. (There is also a 17th-magnitude star just southeast of the IC position, but Corwin states that it is not visible on a print of Wolf's plate, so it cannot be the IC object.)

Apparent size 0.65 by 0.35 arcmin. Listed as a member (VCC 1633) of the Virgo Cluster, but not actually a Cluster member, since much further away.

Apparent size 1.25 by 0.15 arcmin.

Per Dreyer, IC 3544 (Schwassmann 291, 1860 RA 12 28 44, NPD 74 55.7) is "considerably faint, very small, perhaps a 12.5 magnitude star". The position precesses to RA 12 35 47.4, Dec +14 17 59, right on the brighter of the stars listed above, so the identification is certain. (Such a close pair of stars would appear to be a single object on Schwassmann's plate, so both stars should be considered part of the IC entry.)

Historical Identification: Per Dreyer, IC 3545 (Wolf list IV #211, 1860 RA 12 28 44, NPD 62 42.3) is "pretty bright, small, round, brighter middle." The position precesses to RA 12 35 41.0, Dec +26 31 23, right on the galaxy, so the identification is certain. The duplicate listing is odd, as Wolf's position is essentially identical to the one forNGC 4555, but per Corwin, Wolf put the NGC number on a faint galaxy (PGC 1777936) two arcmin south of the correct one, and must have thought the brighter galaxy was a new discovery. The nearly identical position and description should have alerted Dreyer to the duplication, but they didn't, so we have a duplicate entry to deal with.
Physical Information: Given the duplicate entry, seeNGC 4555 for anything else.

Apparent size 0.95 by 0.55 arcmin.

Per Dreyer, IC 3547 (Wolf list IV #214, 1860 RA 12 28 52, NPD 62 53.9) is "very faint, very small, irregular figure". The position precesses to RA 12 35 49.0, Dec +26 19 47, right on the star listed above, so the identification is certain. (Per Corwin, Wolf's description stated that the object was a little extended at 70°, so there may have been a small plate defect also involved; but if so it doesn't show up well on a print of the plate, while the star is clearly visible.)

Apparent size 0.8 by 0.5 arcmin Listed as a member (VCC 1647) of the Virgo Cluster.

Per Dreyer, IC 3549 (Wolf list IV #216, 1860 RA 12 28 54, NPD 62 49.9) is "very faint, very small, brighter middle, spiral". The position precesses to RA 12 35 51.0, Dec +26 23 47, right on the star listed above, so the identification is certain.(SeeIC 3547 for an image.)