Eminem will join a very elite club tomorrow when the new Billboard Hot 100 singles chart is unveiled. The hip-hop king's new single, "Not Afraid," will be just the 16th to debut at No. 1 on the nearly 52-year old chart.

Released digitally last Monday (May 3) just four days after its radio premiere, “Not Afraid” busts out of the gate with 380,000 first-week digital downloads, according to Nielsen SoundScan -- the biggest sales week for a digital track this calendar year. The song also debuts at No. 24 on the radio-based Rap Songs chart, and is bubbling under the Radio Songs chart with 10.3 million listener impressions, according to Nielsen BDS.

"Not Afraid" is the lead single from Eminem's new album "Recovery," due out on June 22. The single is the first to debut at No. 1 on the Billboard Hot 100 since Britney Spears' "3" on Oct. 17, 2009. "Afraid" is only the second rap single to start at No. 1 following “I’ll Be Missing You” by Puff Daddy & Faith Evans featuring 112, which began its 11-week run at the top on the chart dated June 14, 1997.

“Not Afraid” is Eminem’s third chart-topper. He first led the list for 12 weeks with “Lose Yourself” in 2002-03 and made an impressive 78-1 jump with “Crack A Bottle,” along with Dr. Dre and 50 Cent, on the list dated Feb. 21, 2009. “Bottle” set a then-record for selling the most downloads in its first week of release (418,000), a mark shattered the following week when Flo Rida’s “Right Round” started with 636,000.

Here's a look at the 16 No. 1 debuts in the history of the Billboard Hot 100 chart:

Artist, "Title" (Year)
1) Michael Jackson, "You Are Not Alone" (1995)
2) Mariah Carey, "Fantasy" (1995)
3) Whitney Houston, "Exhale (Shoop Shoop)" (1995)
4) Mariah Carey & Boyz II Men, "One Sweet Day" (1995)
5) Puff Daddy & Faith Evans featuring 112, "I'll Be Missing You" (1997)
6) Mariah Carey, "Honey" (1997)
7) Elton John, "Candle in the Wind 1997/Something About the Way You Look Tonight" (1997)
8) Celine Dion, "My Heart Will Go On" (1998)
9) Aerosmith, "I Don't Want To Miss A Thing" (1998)
10) Lauryn Hill, "Doo Wop (That Thing)" (1998)
11) Clay Aiken, "This Is The Night" (2003)
12) Fantasia, "I Believe" (2004)
13) Carrie Underwood, "Inside Your Heaven" (2005)
14) Taylor Hicks, "Do I Make You Proud" (2006)
15) Britney Spears, "3" (2009)
16) Eminem, "Not Afraid" (2010)

Of the 16 debuts at No. 1, a full 10 of them came between 1995 and 1998. Until the end of 1998, a song could only chart on the Hot 100 if it was released as a commercially available single. The bevy of debuts was prompted by singles being withheld from the market in order to maximize chart position on the tally -- which is based on combining airplay with sales information. At the end of 1998, the Hot 100 changed its formula, allowing airplay-only, or non-commercially available songs to chart.