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The Galactic transient black hole candidate (BHC) MAXI~J1659-152 exhibitedtemporal and spectral evolution during its very first X-ray outburst (2010)after its discovery on 25th Sept. 2010. Our recent studies of a few transientBHCs including MAXI~J1659-152 using Chakrabarti-Titarchuk two-componentadvective flow (TCAF) solution as an additive table local model in XSPECrevealed details of accretion flow dynamics around the black hole (BH). TheTCAF model fitted normalization (N) comes out to be almost constant throughoutthe entire outburst consisting of several spectral states. We introduce twoindependent methods to determine the mass ($M_{BH}$) of the BHC, namely, {\it$i)$ keeping TCAF fitted normalization parameter in a narrow range}, and {\it$ii)$ studying evolution of the Quasi-Periodic Oscillation frequency($\nu_{QPO}$) with time, fitted with the propagating oscillatory shock (POS)model}. The predicted mass ranges of the source with these two methods are$4.7-7.8~M_\odot$, and $5.1-7.4~M_\odot$ respectively. Combining results ofthese two methods, we obtain a most probable mass range of the source to be$4.7-7.8~M_\odot$ or $6^{+1.8}_{-1.3}~M_\odot$.

Estimation of Mass of the Black Hole Candidate MAXI J1659-152 using TCAF and POS Models