The Seventh Photo I've Taken of a Mysterious Orb With an Inverted-Y Symbol

Photo date: November 2, 2016. Photographer: Mark Mahin.

The photo below shows a mysterious orb I photographed in Grand Central Terminal in New York.

This is the 7th time I have photographed an upside-down Y in a mysterious orb. The composite photo below shows six other orbs I have photographed with the same inverted Y symbol (see here and here for the original posts). The photos were taken over the course of quite a few weeks, with no such symbol appearing in 99% of the photos I took during these weeks.

Below is my revised table listing different types of recurring orb motifs I have photographed.

Description	Occurrences	Comments	URL
Inverted Y	7	Rather like the lower case lambda character, part of the Greek alphabet	This post
Umbilical cord ( AKA "cul-de-sac")	10	Resembles an umbilical cord with a curved loop. Is it a symbol of motherhood?	http://orbpro.blogspot.com/2016/11/the-10th-appearance-of-this-orb-motif.html
Curved stripe at top or bottom	6	May be on top or bottom of orb	http://orbpro.blogspot.com/2016/10/mysterious-motif-another-orb-with.html
Diagonal stripe	6	Goes from one side of orb to another, diagonally. Looks like a slash (not a backslash)	http://orbpro.blogspot.com/2016/10/two-sky-orbs-with-identical-looking.html
Short diagonal stripe	3	Goes only one third of orb, from top right corner toward center	http://orbpro.blogspot.com/2016/10/two-sky-orbs-with-similar-looking-stripe.html http://orbpro.blogspot.com/2016/08/a-multicolored-striped-orb.html
Hose and circle	6	Looks like a ball that has fallen out of a tube	http://orbpro.blogspot.com/2016/11/two-more-cases-of-this-recurring-orb.html
Slanted C	4	Looks like a C shape, tilted over quite a bit to the right	http://orbpro.blogspot.com/2016/09/striped-orb-looks-just-like-3-other.html
Caret stripe	2	Looks rather like the caret character	http://orbpro.blogspot.com/2016/09/two-mysterious-orbs-with-bent-stripes.html
Hook-like stripe	2	Has a kind of candy-cane shape	http://orbpro.blogspot.com/2016/07/another-orb-with-hook-like-stripe.html
Curvy 9 which fell down	2	Looks like a curvy nine which “fell down”	http://orbpro.blogspot.com/2016/07/two-striped-orbs-with-same-fingerprint.html
4 stripes	2	Straight lines intersecting in a particular shape	http://orbpro.blogspot.com/2016/07/the-same-strange-mark-on-two-striped.html
Broken squiggly T	3	One wiggly horizontal stripe at the top above a vertical stripe at the bottom	http://orbpro.blogspot.com/2016/07/reappearance-of-double-striped-orb.html