RECON: TNO occultation with 48639

Event between (48639) 95TL8 and star GA1100:00467804 with event index number of 2381552

Geocentric closest approach at 2024/11/15 08:26:14 UTC

J2000 position of star is 03:53:49.1 +20:21:58
Equinox of date position of star is 03:55:07.0 +20:25:50
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 15 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 46.8 AU from the Sun and 45.8 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is 1740 km.
The sky-plane scale is 33248.3 km/arcsec.

The TNO has an absolute magnitude Hv=4.9
Diameter=622.3 km assuming a 5% albedo -- 24.5 sec chord
Diameter=254.1 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 48639, (2024/11/15 08:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.0 +16:33:27  0.8 10.70  25
44Zet Per      03:55:42.1 +31:57:20  2.8 11.52  19
PPM 092958     03:51:23.1 +22:19:05  5.9  2.09  14
PPM 092931     03:50:27.6 +21:25:01  8.5  1.49  14
PPM 093057     03:56:25.3 +20:57:11  9.4  0.58  15
PPM 093039     03:55:24.2 +20:39:48 10.3  0.23  15
48639          03:55:16.2 +20:26:18 15.6        15
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 27.8 km RECON observability=1.0 and success probability=24.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:25:42 -57.0 Dark Up 59.6 184.7 Up 08:16:28 - 08:34:55 -721
Sleaford 08:25:03 -51.6 Dark Up 55.7 208.7 Up 08:15:50 - 08:34:17 -733
Kelowna 08:25:40 -57.6 Dark Up 60.4 186.5 Up 08:16:26 - 08:34:53 -811
Peachland 08:25:41 -57.8 Dark Up 60.5 186.0 Up 08:16:27 - 08:34:54 -817
Summerland 08:25:41 -57.9 Dark Up 60.7 186.2 Up 08:16:27 - 08:34:54 -833
Penticton 08:25:40 -57.9 Dark Up 60.7 186.4 Up 08:16:27 - 08:34:54 -841
Oliver 08:25:41 -58.3 Dark Up 61.1 186.5 Up 08:16:27 - 08:34:54 -875
Victoria 08:25:51 -59.6 Dark Up 61.8 179.0 Up 08:16:38 - 08:35:05 -882
Anarchist Mountain Observatory 08:25:40 -58.4 Dark Up 61.2 186.9 Up 08:16:27 - 08:34:54 -894
Tonasket 08:25:41 -58.7 Dark Up 61.5 186.8 Up 08:16:27 - 08:34:54 -923
Okanogan 08:25:41 -59.0 Dark Up 61.9 186.6 Up 08:16:28 - 08:34:55 -953
Brewster 08:25:42 -59.3 Dark Up 62.2 186.2 Up 08:16:28 - 08:34:55 -977
Manson/Chelan 08:25:43 -59.6 Dark Up 62.4 185.5 Up 08:16:30 - 08:34:57 -992
Wenatchee 08:25:44 -60.1 Dark Up 62.9 185.3 Up 08:16:30 - 08:34:57 -1036
Ellensburg 08:25:44 -60.5 Dark Up 63.3 184.9 Up 08:16:31 - 08:34:58 -1073
Yakima 08:25:45 -60.9 Dark Up 63.7 185.0 Up 08:16:31 - 08:34:58 -1113
Toppenish/White Swan 08:25:45 -61.1 Dark Up 63.9 185.4 Up 08:16:31 - 08:34:58 -1136
Goldendale 08:25:46 -61.7 Dark Up 64.5 184.5 Up 08:16:33 - 08:35:00 -1185
PNWRO 08:25:40 -61.1 Dark Up 64.2 188.6 Up 08:16:27 - 08:34:54 -1194
The Dalles 08:25:47 -62.0 Dark Up 64.7 183.8 Up 08:16:34 - 08:35:01 -1201
Maupin 08:25:48 -62.4 Dark Up 65.1 184.1 Up 08:16:34 - 08:35:01 -1244
Sisters 08:25:50 -63.3 Dark Up 66.0 183.1 Up 08:16:36 - 08:35:03 -1324
Bend 08:25:49 -63.5 Dark Up 66.3 183.7 Up 08:16:35 - 08:35:02 -1352
Oregon Observatory 08:25:50 -63.7 Dark Up 66.4 183.5 Up 08:16:36 - 08:35:03 -1367
North Lake 08:25:48 -64.2 Dark Up 67.1 184.8 Up 08:16:34 - 08:35:01 -1440
Chiloquin 08:25:52 -65.0 Dark Up 67.8 182.7 Up 08:16:39 - 08:35:06 -1493
Klamath Falls 08:25:52 -65.3 Dark Up 68.1 182.9 Up 08:16:38 - 08:35:05 -1529
Lakeview 08:25:48 -65.0 Dark Up 68.1 186.4 Up 08:16:34 - 08:35:01 -1556
Cedarville 08:25:48 -65.5 Dark Up 68.7 187.1 Up 08:16:34 - 08:35:01 -1625
Fall River/Burney 08:25:51 -66.3 Dark Up 69.3 184.1 Up 08:16:38 - 08:35:05 -1655
Susanville 08:25:50 -66.7 Dark Up 69.9 186.2 Up 08:16:36 - 08:35:03 -1732
Greenville 08:25:51 -67.0 Dark Up 70.2 185.5 Up 08:16:38 - 08:35:05 -1755
Gimple 08:25:51 -67.0 Dark Up 70.2 185.7 Up 08:16:37 - 08:35:04 -1757
Quincy 08:25:51 -67.2 Dark Up 70.4 185.5 Up 08:16:38 - 08:35:05 -1776
Portola 08:25:49 -67.2 Dark Up 70.4 186.9 Up 08:16:36 - 08:35:03 -1797
Reno 08:25:47 -67.2 Dark Up 70.6 188.8 Up 08:16:34 - 08:35:01 -1835
Carson City 08:25:47 -67.5 Dark Up 71.0 189.0 Up 08:16:34 - 08:35:01 -1873
Gardnerville 08:25:48 -67.7 Dark Up 71.2 189.3 Up 08:16:34 - 08:35:01 -1899
Yerington 08:25:46 -67.5 Dark Up 71.1 190.9 Up 08:16:32 - 08:34:59 -1903
Dunrhomin 08:25:00 -59.6 Dark Up 65.1 222.2 Up 08:15:47 - 08:34:14 -1939
Hawthorne 08:25:44 -67.7 Dark Up 71.5 192.7 Up 08:16:30 - 08:34:57 -1960
CU-SBO 08:25:00 -59.8 Dark Up 65.3 222.4 Up 08:15:47 - 08:34:14 -1964
Lee Vining 08:25:47 -68.4 Dark Up 72.1 191.6 Up 08:16:33 - 08:35:00 -2011
Tonopah 08:25:40 -67.5 Dark Up 71.6 197.1 Up 08:16:26 - 08:34:53 -2030
Bishop 08:25:44 -68.6 Dark Up 72.6 194.2 Up 08:16:30 - 08:34:57 -2085
Beatty 08:25:39 -68.2 Dark Up 72.6 199.6 Up 08:16:25 - 08:34:52 -2159
Indian Springs 08:25:36 -68.0 Dark Up 72.6 203.1 Up 08:16:23 - 08:34:50 -2209
Henderson 08:25:34 -68.0 Dark Up 72.9 205.9 Up 08:16:20 - 08:34:47 -2276
Patrick 08:25:30 -67.9 Dark Up 73.0 210.0 Up 08:16:16 - 08:34:43 -2359
Laughlin/Bullhead City 08:25:33 -68.4 Dark Up 73.5 208.4 Up 08:16:19 - 08:34:46 -2375
Kingman/Dolan Springs 08:25:30 -68.1 Dark Up 73.3 209.9 Up 08:16:17 - 08:34:44 -2380
Mohave Valley 08:25:33 -68.6 Dark Up 73.7 208.8 Up 08:16:19 - 08:34:46 -2404
Wildwood 08:25:48 -71.4 Dark Up 75.8 196.6 Up 08:16:34 - 08:35:01 -2427
Lake Havasu City 08:25:32 -68.8 Dark Up 74.0 210.3 Up 08:16:19 - 08:34:46 -2450
Parker 08:25:33 -69.0 Dark Up 74.3 211.0 Up 08:16:19 - 08:34:46 -2488
Idyllwild 08:25:41 -70.7 Dark Up 75.6 203.8 Up 08:16:27 - 08:34:54 -2496
George/Scottsdale 08:25:23 -67.8 Dark Up 73.5 218.8 Up 08:16:10 - 08:34:37 -2567
Calipatria 08:25:37 -70.4 Dark Up 75.7 209.0 Up 08:16:24 - 08:34:51 -2580
Yuma 08:25:34 -70.2 Dark Up 75.7 212.8 Up 08:16:20 - 08:34:47 -2639

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 48639, (2024/11/15 08:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.70  25
44Zet Per      03:54:07.9 +31:53:01  2.8 11.52  19
PPM 092958     03:49:55.1 +22:14:38  5.9  2.09  14
PPM 092931     03:49:00.2 +21:20:32  8.5  1.49  14
PPM 093057     03:54:57.9 +20:52:54  9.4  0.58  15
PPM 093039     03:53:57.0 +20:35:29 10.3  0.23  15
48639          03:53:49.1 +20:21:58 15.6        15
Positions are for J2000

Event circumstances last updated at 2022/03/30 23:17:16 UT

Marc W. Buie, Southwest Research Institute

RECON