RECON: TNO occultation with 49036

Event between (49036) Pelion and star GA1040:00524317 with event index number of 2318099

Geocentric closest approach at 2028/02/08 13:07:09 UTC

J2000 position of star is 04:33:48.5 +14:01:24
Equinox of date position of star is 04:35:11.4 +14:04:23
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 42 degrees from the moon. Moon is 94% illuminated.
Apparent brightness V=24.1

Object is 22.2 AU from the Sun and 21.9 AU from the Earth.
Apparent velocity is 6.4 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 1303 seconds.
The 1-sigma cross-track error in the shadow position is 3647 km.

The object has an absolute magnitude Hv=10.4
Diameter=50.1 km assuming a 5% albedo -- 7.9 sec chord
Diameter=20.5 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 49036, (2028/02/08 13:07UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:32.2 +16:33:49  0.8  2.54  41
Bellatrix      05:26:38.4 +06:22:22  1.6 14.77  34
86Rho Tau      04:35:26.8 +14:54:04  4.6  0.82  42
PPM 119983     04:33:04.6 +13:57:44  8.1  0.57  42
PPM 119989     04:33:23.1 +14:12:46 10.4  0.50  42
49036          04:35:23.7 +14:04:49 16.0        42
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 49036, (2028/02/08 13:07UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  2.54  41
Bellatrix      05:25:07.8 +06:20:58  1.6 14.77  34
86Rho Tau      04:33:51.1 +14:50:39  4.6  0.82  42
PPM 119983     04:31:29.5 +13:54:13  8.1  0.57  42
PPM 119989     04:31:47.9 +14:09:16 10.4  0.50  42
49036          04:33:48.5 +14:01:24 16.0        42
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:28:04 UT

Marc W. Buie, Southwest Research Institute

RECON