How to use 'NASA HORIZONS Ephemeris' for objects, centaurs and asteroids that are not numbered

The 'NASA HORIZONS Ephemeris' gives the zodiac position in the basis horoscope for objects that are not numbered:

http://ssd.jpl.nasa.gov/horizons.cgi

1. Select 'Target Body', typing the body name without spaces, like '1994TA'. 

2. Change the 'Time Span', adding the time in 24 hour format.

3. Select 'Table Settings'. Removes all the check boxes selected and adds the '31' ('Observer ecliptic lon. & Lat.) to get the longitude and latitude. Optionally add the box '2' ('Apparent RA & DEC') to obtain the right ascension and declination as well.

4. 'Generate Ephemeris'.

Example:

 2009-May-12 17:04      81.1065564  -4.2626825
 2009-May-13 17:04      81.1548190  -4.2605865
 2009-May-14 17:04      81.2034023  -4.2585392
 2009-May-15 17:04      81.2522938  -4.2565409
 2009-May-16 17:04      81.3014822  -4.2545920
 2009-May-17 17:04      81.3509576  -4.2526927 

In this example, the result for the object 1994 TA at 2009-05-12 17:04, is 81.1065564 (in relation to 0º Aries), which means that 1994 TA is at 21º06' Gemini:

 

♈ = 0º; ♉ = 30º; ♊ = 60º; ♋ = 90º; ♌ = 120º; ♍ = 150º; ♎ = 180º; ♏ = 210º; ♐ = 240º; ♑ = 270º; ♒ = 300º; ♓ = 330º. 

 

• 81º is between 60º and 90º => Gemini sign
• 81º - 60º = 21º degrees
• 0.1065564 x 60 = 6' minutes.

 

When the orbit is well known, the object is finally assigned to a permanet number and we can use 'Serennu Ephemeris' or 'True-Node Ephemeris'.