page_title: M101 OT2015-1
section_title: Discovery
hierarchical_section_title: M101 OT2015-1 / Discovery
caption_attribution_description: English: Astronomical Observatory of the Museum Vasile Pârvan in Bârlad, România
context_page_description: M101 OT2015-1 is a contact binary that merged into a single star, in a process known as a luminous red nova. M101 OT2015-1 is an optical transient located in the Pinwheel Galaxy. Luminous red novae are representatives of the sparsely populated class of exploding variables which is known since 1988 when such a star appeared in the M31 galaxy.
context_section_description: M101 OT2015-1 was discovered on February 10, 2015 by Dumitru Ciprian Vîntdevară from Planetarium and Astronomical Observatory of the Museum Vasile Pârvan in Bârlad, România. The transient is located (J2000 = 14h02m16s.78 +54h26m20s.5) in the outer reaches of a spiral arm of M101, at 489W and 324N of the measured position of the galaxy nucleus.
caption: Astronomical Observatory of the Museum Vasile Pârvan in Bârlad, România
exif: {"Image Make": "Canon", "Image Model": "Canon EOS 1100D", "Image Software": "Picasa", "Image DateTime": "2013:10:09 14:50:54", "Image Artist": "Picasa", "Image YCbCrPositioning": "Co-sited", "Image Tag 0x1001": "2256", "Image Tag 0x1002": "1504", "Image Rating": "0", "Image Tag 0x4749": "0", "Image Copyright": "", "Image ExifOffset": "2384", "Image SensitivityType": "Recommended Exposure Index", "Image RecommendedExposureIndex": "1600", "Image XPAuthor": "Picasa", "Image CameraOwnerName": "", "Image BodySerialNumber": "123062034838", "Image LensSpecification": "[18, 55, 0/0, 0/0]", "Image LensModel": "EF-S18-55mm f/3.5-5.6 IS II", "Image LensSerialNumber": "000025032e", "Image Padding": "[]", "EXIF ExposureTime": "1/2500", "EXIF FNumber": "22", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "1600", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2013:10:06 14:13:52", "EXIF DateTimeDigitized": "2013:10:06 14:13:52", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "91/8", "EXIF ApertureValue": "9", "EXIF ExposureBiasValue": "-1", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "18", "EXIF SubSecTime": "00", "EXIF SubSecTimeOriginal": "00", "EXIF SubSecTimeDigitized": "00", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2256", "EXIF ExifImageLength": "1504", "EXIF FocalPlaneXResolution": "451200/181", "EXIF FocalPlaneYResolution": "300800/119", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF ImageUniqueID": "60766b6e8494bc0b7c3981d34633ba77", "EXIF Padding": "[]", "EXIF OffsetSchema": "4106"}