#_There is 5 upagrahas, or Kalavelas called also Muhurta-velas, Venus and moon have no Kalavela

(1) Kaala , gives the same results as rahu in the chart (good or bad), rises at the middle of Sun’s part. In other words, we find the
time at the middle of Sun’s part and find
lagna rising then. That gives Kaala’s longitude.
(2) Mrityu , gives the same results as mars in the chart (good or bad), rises at the middle of Mars’s part.
(3) Artha, gives the same results as mercury in the chart (good or bad), Praharaka rises at the middle of Mercury’s part.
(4) Yamakantaka is powerful in confering benefits, gives the same results as jupiter in the chart good or bad), YamaGhantaka rises
at the middle of Jupiter’s part..
(5) Gulika , gives the same results as saturn in the chart (good or bad), Gulika rises at the middle of Saturn’s part.
(6) Maandi is an extra kavela, it rises at the end of Saturn’s part (that is why Mandi= slow, is always after Gulika), all others rises
in the middle part of their father/lord.

#_There is 5 Aprakash Grahas (sins); Dhuma, Vyatipata, Parivesha, Chapa, Upaketu, it is very inauspicious when these upagrahas
conjunct the sun or the moon, it will destroy the dynasty or descendants, the longevity and the wisdom.
The effect of non-luminous planets will come during the main period or sub period of their dispositor. for each Upagraha and Muhurta Vela, the
dispositor should invariably be considered before coming to a conclusion.. it is very inauspicious when these upagrahas conjunct the sun or the
moon, it will destroy the dynasty or descendants, the longevity and the wisdom.

Jyotish_BPHS_Santhanam_Vol.1; If the Upakhetu (or upagraha, vide sloka 5 ch. 32) is in its exaltation sign, or own/friendly sign,
and is devoid of malefic aspect, the native will go to heavens after death
Jyotish_Ersnt Wilhem_Jaimini's Sutras Raw_Vol.1: And an Upagraha, Vipendra, in exaltation, own, or benefic Rasi and
devoid of malefic aspect, indicates emancipation.

Parivesha in malefic sign Dhooma in malefic sign Vyatipata debil.(Rahu sin) Vyatipata own (Rahu sin) chaos,
(Moon halo/sin) generally (Mars sin, smoke) chaos, extreme good or bad extreme good or bad
extremely benefic Parivesha exalt. (Moon halo/sin)
generally extremely benefic
Indrachapa debil. (Venus sins)

ARDHAPRAHARA
Own (Mercury)

Dhooma Debil. (Mars sin, _Dhuma, (Mars sin,smoke) always produce excessive heat, Indrachapa own (Venus sins)
smoke) danger from fire and mental anguish; & Indrachapa in mal.sign ()
Upaketu exalt. (Ketu sins) _Vyatipata, (Pata/fallen) shadow of rahu /sins, havoc, Upaketu own, (Ketu sins)
chaos, create danger from horn animals or death through
quadrupeds
_Parivesha, (Paridhi) (Moon halo/sin) .causes fear of water,
watery diseases as well as imprisonment, be stuck,it means
environment or circumstances; it destroys the environment
or circumstances and is considered to create lots of problems
GULIKA Own (Saturn) _Chapa, (Indrachapa, "Kodanda", "Indra-Dhanus", or
"Karmuka".) = sins/ shadow of Venus, danger of being hit
by stones, wounded by weapon/ instruments or falling from
Dhooma own (Mars sin,smoke) Dhooma Exalt. (Mars sin, smoke)
a height..shows the bow of Indra as well as the arrows which
Upaketu debil. (Ketu sins)
can be piercing
_Upaketu, (Dhwaya or Sikhi) shadow of ketu; will reverse
whatever indications are shown. Upaketu can be connected
with some very high or special person
in your life dying. Upaketu will be responsible for troubles
like a fall, and hitting, destruction of undertakings and peril
from thunderbolt
KALA Own (Sun) these 5 Aprakash Grahas have also one malefic sign
according to "Keeranuru Nataraja of Jatakalankaram"

Parivesha own ? Vyatipata exalt. (Rahu sin) Vyatipata in malefic sign

YAMAGHANTAKA
Own (Jupiter) MRITYU Own (mars)