History of the star: Another title Iclarkrav was coined from from the Arabic Iklil al 'Akrab, the "Crown of the Scorpion", which along with beta (Acrab), and pi formed the Arabic 15th mansion of the Moon.

The Hindus knew the group as their 15th nakshatra Anuradha, "Propitious" or "Successful", "The Star Calling to Activity" (2)— "Mitra, the Friend"; united by friendship. One of the Adityas, being the presiding divinity; and they figured it as a "Row" or "Ridge", which the line of component stars well indicates.

Aakrab genubi is another title.

Delta was of importance in early times, for with beta (Acrab) and pi, on either side in a bending line; it is claimed for the Euphratean Gis-gan-gu-sur, "the Light of the Hero", or the "Tree of the Garden of Light", "placed in the midst of the abyss," and so reminding us of that other tree, the Tree of Life, in the midst of the Garden of Eden. In Mesopotamian these were Jia Jan Ju Sur which seems to have meant "the forbidden Tree of Life in Eden".

It was selected by the Babylonian astronomers, with beta (Acrab), to point out their 23rd ecliptic constellation, which Epping calls Qablu (und qabu) sha rishu aqrabi, the "Middle of the Head of the Scorpion".

In the lunar zodiac delta, beta, and pi were the Persian Nur, "Bright"; the Sogdian and Khorasmian Bighanwand, "Clawless"; and the Coptic Stephani, "the Crown".

[Star Names, Their Lore and Meaning, Richard Hinchley Allen, 1889] 

The origin of the alternative title 'Isidus' given to this star is obscure, but is said to probably have some connection with the Egyptian goddess Isis. Sirius also has the alternative title Isis. Allen under Canis Major (p.124) says "it should be noted that the word Isis at times also indicated anything luminous to the eastward heralding sunrise".

Influences of the Arabic 15th mansion of the Moon: Improves misfortune, makes love durable, strengthens buildings and helps seamen. With Moon transiting here; build, sow, plant, navigate but do not marry.

[Fixed Stars and Constellations in Astrology, Vivian E. Robson, 1923]  

The astrological influences of the constellation: The Scorpion is associated with the Hebrew letter Oin and the 16th Tarot Trump "The Lightning Struck Tower". (Robson*).

The astrological influences of the constellation given by Manilius:

"The Scorpion presides over arms" [Manilius, Astronomica, 1st century AD, book 4, p.253]

By virtue of his tail armed with its powerful sting, wherewith, when conducting the Sun's chariot through his sign, he cleaves the soil and sows seed in the furrow, the Scorpion creates natures ardent for war and active service, and a spirit which rejoices in plenteous bloodshed and in carnage more than in plunder. Why, these men spend even peace under arms : they fill the glades and scour the woods; they wage fierce warfare now against man, now against beast, and now they sell their persons to provide the spectacle of death and to perish in the arena, when, warfare in abeyance, they each find themselves foes to attack. There are those, too, who enjoy mock-fights and jousts in arms (such is their love of fighting) and devote their leisure to the study of war and every pursuit which arises from the art of war. [Manilius, Astronomica, 1st century AD, p.239-240]. 

This star and Acrab are both positioned next to each other in the Scorpion's head, they are supposed to correspond to a Mars character with a blend of Saturn characteristics. Dr Koch is of the opinion that both these stars are 'doubtful'. The effect of these two stars has yet to be researched more fully. According to tradition, these stars are credited with giving the ability to do research, and especially research into things of a particularly secret and hidden nature. For this to be however, further influence of the sign Scorpio and planets Mercury and Uranus have also to be present; preferably these stellar bodies would be positioned on the MC or Ascendant and be near another stellar body pointing to mental capabilities. In lower types, however, a tendency to falsehood and treason can be noted. Both stars are a poor augury for material wealth. There will be difficulties, impediments, or loss, dependent upon the position these have in the cosmogram. In mundane maps, there is an indication of mass catastrophes, should either Mars, Saturn or Uranus be in this first degrees of Sagittarius, especially in an angular position. (Fixed Stars and Their Interpretation, Elsbeth Ebertin, 1923)

Situated on the head of the Scorpion, not where its armament is, which is at the rear. It is a fighter of great skill and characterizes Mars-Saturn perfectly. Anyone with this star strong in their horoscope is likely to show a patient and wary approach to any situation, but this will belie the skilled determination which will then be brought to bear. Scorpio is famous for the surgeons born in it and this star shows up just the qualities which they need to have. The same applies to generals, policemen, private investigators and secret service agents, many of whom have this star well placed and aspected. In research of all other kinds too, it distinguishes the real adept.(The Living Stars, Dr. Eric Morse).   

With Sun: Immoral, dissipated, low associates, many sorrows. (Robson*).

With Moon: Reserved, suspicious bad for business success, disgrace, loss by horses and cattle. (Robson*).

With Mercury: Hypocritical, evil mind, low associates, imprisonment, malignant disease but chances of recovery, criminal, secrets in connection with life or parentage, domestic disharmony. (Robson).

With Venus: Quiet, reserved, jealous, selfish, favorable for gain. (Robson*).

With Mars: Immoral, criminal, violent, evil environment, sudden or violent death. (Robson*).

With Jupiter: Deceitful, dishonest, dissipated, low companions, danger of imprisonment. (Robson*).

With Saturn: Vacillating, strong passions, evil habits, low associates, may be disowned by family, several unhappy marriages, early death of favorite child, death from consumption. (Robson*).

With Uranus: Shrewd, cunning, excellent linguist, bad morals, trouble through opposite sex, bad for marriage, many enemies, strange adventures abroad-sometimes as spy, bad for gain, obscure death. (Robson*).

With Neptune: Active mind, weak character, easily led, ruined through opposite sex, organizing ability, high position but subsequent disgrace, accidents from fire, water and electricity, death by accident or by human hands. (Robson*).

References

*(Fixed Stars and Constellations in Astrology , Vivian E. Robson, 1923)