Subramanian got interested in finding the lander after a picture of the impact site was released by NASA.
The Indian Chandrayaan 2 spacecraft was put into lunar orbit on 20 August.
NASA, on Tuesday, announced that its moon mission has discovered the remains of Vikram Lander and identified the debris spotted by Subramanian with an "S" on its image. The space organization said it couldn't find the lander dependent on the picture because of the huge shadows that secured the territory.
After receiving this tip, the LROC team confirmed the identification by comparing the images.
Further, he zeroed in on his observations and tweeted out the possible crash site of the lander.
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What happened to Chandrayaan 2 Vikram Lander?
Vikram Lander was scheduled to make a soft-landing near the south pole of the moon on September 7.
The image that Shans, as Shanmuga Subramanian calls himself, worked on was clicked by Nasa on September 17 and was posted on its website on September 29.
"Our own orbiter had located Vikram Lander, we had already declared that on our website, you can go back and see", Sivan was quoted as saying by news agency ANI.
Vikram was part of India's Chandrayaan-2 mission to the moon, which launched in July. But contact was lost on descent, with the Vikram lander going silent around 2 km (1.2 mi) from the surface and remaining that way since.
NASA also said, "Despite the loss, getting that close to the surface was an wonderful achievement".
As it turns out, Subramanian was spot on with his inferences, and now NASA has lauded him for finding the lander.
In an effort to speed up the search, NASA released images of the site captured by the agency's Lunar Reconnaissance Orbiter Camera (LROC) both before and after the September 6 landing attempt to the public. The job wasn't easy as the images released by Nasa weren't of high resolution.