RECON: TNO occultation with 04SC60

Event between 04SC60 and star GA1040:00215909 with event index number of 1959884

Geocentric closest approach at 2024/07/26 22:50:57 UTC

J2000 position of star is 02:15:54.6 +14:13:44
Equinox of date position of star is 02:17:12.5 +14:20:20
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 17 degrees from the moon. Moon is 63% illuminated.
Apparent brightness V=22.4

Object is 32.3 AU from the Sun and 32.3 AU from the Earth.
Apparent velocity is 7.0 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 224 seconds.
The 1-sigma cross-track error in the shadow position is 1549 km.

The object has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 32.7 sec chord
Diameter=91.8 km assuming a 30% albedo -- 13.3 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 
 
 

Star training set for 04SC60, (2024/07/26 23:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.0 +16:33:25  0.8 33.79  51
6Bet Ari       01:56:00.1 +20:55:38  2.6  8.30  17
19 Ari         02:14:24.0 +15:23:38  5.7  1.26  17
PPM 118097     02:18:37.5 +14:34:42  8.3  0.41  18
04SC60         02:17:14.9 +14:20:32 15.5        18
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 04SC60, (2024/07/26 23:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 33.79  51
6Bet Ari       01:54:38.5 +20:48:26  2.6  8.30  17
19 Ari         02:13:03.4 +15:16:47  5.7  1.26  17
PPM 118097     02:17:17.2 +14:27:56  8.3  0.41  18
04SC60         02:15:54.6 +14:13:44 15.5        17
Positions are for J2000

Event circumstances last updated at 2023/11/08 05:24:41 UT

Marc W. Buie, Southwest Research Institute

RECON