1)When your rising or Lagan at the time of birth falls in Leo sign then you belongs to Leo Ascendant. Or in other words at your birth time leo sign is rising in eastern horizon in the sky you belong to Leo Ascendant.
2)Meaning Of Leo Ascendant in vedic astrology —
1st house is Leo rashi and lord is Sun. So sun is your lagan lord.
2nd house is Virgo rashi and lord is Mercury.
3rd house is Libra rashi and lord is Venus.
4th house is Scorpion rashi and lord is Mars.
5th house is Sagittarius rashi and lord is Jupiter.
6th house is Capricorn and lord is Saturn.
7th house is Aquarius and lord is Saturn.
8th house is Pisces and lord is Jupiter.
9th house is Aries and lord is Mars.
10th house is Tarush and Lord is Venus.
11th house is Gemini and Lord is Mercury.
12th house is cancer and Lord is Moon.
3)Benefice planet for Leo Ascendant
Mars—Mars is lord of 4th house (Kendradipati Dosh) so benefice and Lord of 9th house most benefice trikona(trine) so benefice. So mars is most benific for Leo Ascendant. Again as lord ship of both Kona or trine (Lakshmi sthan) and Kendra (Vishnu sthan) So mars is a yogkarak planet for Leo Ascendant.
Sun—Sun is lagan lord so sun is benefice for Leo.
Malefic for Leo—-
Mercury—Mercury is lord of 2nd and 11th house so it is Melific for Leo.
Venus—Venus is lord of 3rd (Dussthan)and lord of 10th house(Kendradipati Dosh) so it is Malefic for Leo Ascendant.
Neutral for Leo—-
Jupiter–Jupiter is lord of 5th house(benefice) and Lord of 8th house(Malefic) so it is consider Neutral for Leo.
Moon—Moon is lord of 12th house so it is Neutral.
Saturn—Saturn is lord of 6th house(Malefic) and 7th house(Kendradipati Dosh–Benefice) so it is Neutral for Leo.
Marak—Marak house is 2nd and 7th so lord of this house is Markesh so Mercury and Saturn is Marak for Leo.
4)Body Construction—Body Construction depend on 1st house. 1st house is leo rashi and lord is sun. So their physical constitution are according to natural significant of leo sign and Sun so they are generally average to tall in heights. Their face is egg shape. They have magnetic face (due to leo and Sun significant). They are attracting ( it is because 2nd house which is belong to face and for Leo Ascendant Virgo sign is falling in 2nd house ). So they are appearing between crowd means lookness in crowd (due to their magnetic attraction). They are strong in physical constitution.
Health — Leo and sun both are firey in nature. So Leo Ascendant body have excess fire element (my means Agni Tatvas ki Pradhanta). So they are suffering from Pitta Dosh.
5)Mentality, Behavior, Nature —
Leo is King of planet so generally leo native may be interested to serve like King. They are independent liker from brain (1st house which is belong to brain and leo effect on brain ) so don’t believe in pressurized but believe to pressurized other.
For Leo Ascendant 4th house is scorpion sign so according to scorpion quality their mind have hidden quality means a lot of problem generated in their mind. Leo Ascendant has a lot of hidden desires in their mind.
5th house is Sagittarius sign for Leo Ascendant so they are religious by nature. Kindness, Nobility, forgiveness is other mental behavior of leo native ( this is due to Sagittarius natural significant). Apart from this they have inclined to money making from mind. This tends to leo native to enjoying striking life(leo and Sagittarius quality ).
4th house scorpion impact and 1st house leo impact makes leo native to selfish (natural sun and leo quality and scorpion in 4th house which belongs to mind) helps this quality).
Self-constricted , self–Interest, Jealous, are inner quality of leo native. Also scorpion mind makes him just like philosopher. Apart from this they are modern from brain because 1st house have leo sign (which belongs to brain and which lord is Sun who represent modern attitude).
5th house Sagittarius is a dual sign which indicating their mentality is dual but 1st house is fixed sign so they are not much flexible. Means they are adjustable but don’t changeable mentality. Means they are not following natural rule of others (Means they make their rule own self due to King quality of Leo). Leo native is lazy from mentality (because mentality is belong to 5th house and 1st house and Sagittarius shows laziness and leo own self lazy).
But they are ill by temper ( because 4th house belongs to mind and mind have scorpion effect, 1st house belong to brain and it have leo effect of fire sign, 5th house belong to mentality and it is also fiery sign). They shows this effect only when any body disturbed him. In general they are cool minded native.
They are good in speech(Virgo effect on 2nd house) and communication( Practical and balance approach Libra effect on 3rd house).
They loves Music, arts and history (scorpion effect on 4th house which belongs to Mind and watery sign quality).