RECON: TNO occultation with 48639

Event between (48639) 95TL8 and star GA1100:00467804 with event index number of 1432722

Geocentric closest approach at 2024/11/15 08:28:58 UTC

J2000 position of star is 03:53:49.1 +20:21:58
Equinox of date position of star is 03:55:03.2 +20:25:39
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=21.5

[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 126 seconds.
The 1-sigma cross-track error in the shadow position is 1790 km.
The sky-plane scale is 33248.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 26.0 sec chord
Diameter=269.7 km assuming a 30% albedo -- 10.6 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 26.2 km RECON observability=1.0 and success probability=20.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:28:22 -57.1 Dark Up 59.9 188.0 Up 08:17:22 - 08:39:21 -1216
Kelowna 08:28:22 -57.5 Dark Up 60.3 187.8 Up 08:17:23 - 08:39:22 -1251
Peachland 08:28:23 -57.6 Dark Up 60.5 187.2 Up 08:17:24 - 08:39:23 -1258
Summerland 08:28:23 -57.7 Dark Up 60.6 187.5 Up 08:17:24 - 08:39:23 -1273
Penticton 08:28:23 -57.8 Dark Up 60.7 187.7 Up 08:17:23 - 08:39:22 -1281
Oliver 08:28:23 -58.1 Dark Up 61.0 187.8 Up 08:17:23 - 08:39:22 -1315
Victoria 08:28:34 -59.5 Dark Up 61.8 180.4 Up 08:17:34 - 08:39:33 -1324
Anarchist Mountain Observatory 08:28:22 -58.2 Dark Up 61.2 188.2 Up 08:17:23 - 08:39:22 -1334
Tonasket 08:28:23 -58.5 Dark Up 61.5 188.1 Up 08:17:23 - 08:39:22 -1363
Okanogan 08:28:23 -58.9 Dark Up 61.8 187.9 Up 08:17:24 - 08:39:23 -1394
Brewster 08:28:24 -59.2 Dark Up 62.1 187.6 Up 08:17:25 - 08:39:24 -1417
Manson/Chelan 08:28:25 -59.5 Dark Up 62.3 186.9 Up 08:17:26 - 08:39:25 -1433
Wenatchee 08:28:26 -59.9 Dark Up 62.8 186.7 Up 08:17:26 - 08:39:25 -1477
Ellensburg 08:28:27 -60.4 Dark Up 63.3 186.3 Up 08:17:27 - 08:39:26 -1514
Yakima 08:28:27 -60.8 Dark Up 63.7 186.4 Up 08:17:28 - 08:39:27 -1554
Toppenish/White Swan 08:28:26 -60.9 Dark Up 63.9 186.8 Up 08:17:27 - 08:39:26 -1578
Pasco 08:28:23 -60.7 Dark Up 63.9 189.5 Up 08:17:24 - 08:39:23 -1607
Goldendale 08:28:29 -61.6 Dark Up 64.4 186.0 Up 08:17:29 - 08:39:28 -1626
PNWRO 08:28:23 -60.9 Dark Up 64.1 190.1 Up 08:17:23 - 08:39:22 -1635
The Dalles 08:28:30 -61.9 Dark Up 64.7 185.3 Up 08:17:30 - 08:39:29 -1643
Maupin 08:28:30 -62.2 Dark Up 65.1 185.6 Up 08:17:30 - 08:39:29 -1686
Sisters 08:28:32 -63.2 Dark Up 66.0 184.7 Up 08:17:32 - 08:39:31 -1766
Redmond 08:28:31 -63.1 Dark Up 66.0 185.6 Up 08:17:31 - 08:39:30 -1774
Bend 08:28:31 -63.3 Dark Up 66.2 185.3 Up 08:17:32 - 08:39:31 -1794
Oregon Observatory 08:28:32 -63.5 Dark Up 66.4 185.0 Up 08:17:32 - 08:39:31 -1809
La Pine/Gilchrist 08:28:32 -63.7 Dark Up 66.6 185.0 Up 08:17:33 - 08:39:32 -1829
North Lake 08:28:31 -64.0 Dark Up 67.0 186.5 Up 08:17:31 - 08:39:30 -1882
Chiloquin 08:28:33 -64.9 Dark Up 67.8 184.3 Up 08:17:34 - 08:39:33 -1935
Paisley 08:28:30 -64.4 Dark Up 67.5 187.5 Up 08:17:30 - 08:39:29 -1943
Klamath Falls 08:28:34 -65.2 Dark Up 68.1 184.6 Up 08:17:35 - 08:39:34 -1971
Lakeview 08:28:30 -64.8 Dark Up 68.0 188.1 Up 08:17:30 - 08:39:29 -1997
Cedarville 08:28:30 -65.3 Dark Up 68.6 188.8 Up 08:17:30 - 08:39:29 -2067
Fall River/Burney 08:28:34 -66.1 Dark Up 69.2 185.8 Up 08:17:34 - 08:39:33 -2097
Susanville 08:28:32 -66.5 Dark Up 69.8 188.0 Up 08:17:32 - 08:39:31 -2174
Greenville 08:28:33 -66.8 Dark Up 70.1 187.3 Up 08:17:33 - 08:39:32 -2198
Gimple 08:28:33 -66.8 Dark Up 70.1 187.6 Up 08:17:33 - 08:39:32 -2199
Quincy 08:28:33 -67.0 Dark Up 70.3 187.4 Up 08:17:34 - 08:39:33 -2218
Portola 08:28:31 -67.0 Dark Up 70.4 188.8 Up 08:17:32 - 08:39:31 -2239
Reno 08:28:30 -67.0 Dark Up 70.5 190.7 Up 08:17:30 - 08:39:29 -2277
Carson City 08:28:30 -67.3 Dark Up 70.9 190.9 Up 08:17:30 - 08:39:29 -2314
Gardnerville 08:28:30 -67.5 Dark Up 71.1 191.2 Up 08:17:30 - 08:39:29 -2341
Yerington 08:28:28 -67.2 Dark Up 71.0 192.8 Up 08:17:28 - 08:39:27 -2345
Dunrhomin 08:27:42 -59.2 Dark Up 64.7 223.4 Up 08:16:43 - 08:38:42 -2375
Hawthorne 08:28:26 -67.4 Dark Up 71.3 194.6 Up 08:17:27 - 08:39:26 -2401
Lee Vining 08:28:29 -68.1 Dark Up 72.0 193.7 Up 08:17:29 - 08:39:28 -2452
Tonopah 08:28:22 -67.2 Dark Up 71.5 199.0 Up 08:17:22 - 08:39:21 -2471
Bishop 08:28:26 -68.3 Dark Up 72.4 196.3 Up 08:17:26 - 08:39:25 -2527
Beatty 08:28:21 -67.9 Dark Up 72.4 201.6 Up 08:17:21 - 08:39:20 -2600
Indian Springs 08:28:18 -67.6 Dark Up 72.4 205.1 Up 08:17:18 - 08:39:17 -2650
CPSLO 08:28:36 -71.0 Dark Up 74.8 190.6 Up 08:17:36 - 08:39:35 -2707
Henderson 08:28:16 -67.6 Dark Up 72.6 207.8 Up 08:17:16 - 08:39:15 -2717
Patrick 08:28:11 -67.5 Dark Up 72.7 212.0 Up 08:17:12 - 08:39:11 -2799
Laughlin/Bullhead City 08:28:14 -68.0 Dark Up 73.2 210.4 Up 08:17:15 - 08:39:14 -2815
Kingman/Dolan Springs 08:28:13 -67.7 Dark Up 73.0 211.8 Up 08:17:13 - 08:39:12 -2820
Mohave Valley 08:28:14 -68.2 Dark Up 73.5 210.9 Up 08:17:15 - 08:39:14 -2845
Wildwood 08:28:29 -71.0 Dark Up 75.6 199.1 Up 08:17:30 - 08:39:29 -2869
Lake Havasu City 08:28:14 -68.4 Dark Up 73.7 212.3 Up 08:17:14 - 08:39:13 -2891
Parker 08:28:14 -68.6 Dark Up 74.0 213.0 Up 08:17:15 - 08:39:14 -2929
Idyllwild 08:28:23 -70.3 Dark Up 75.3 206.2 Up 08:17:23 - 08:39:22 -2937
Blythe 08:28:16 -69.1 Dark Up 74.6 213.2 Up 08:17:16 - 08:39:15 -2981
George/Scottsdale 08:28:06 -67.3 Dark Up 73.1 220.7 Up 08:17:06 - 08:39:05 -3007
Calipatria 08:28:19 -70.0 Dark Up 75.4 211.2 Up 08:17:19 - 08:39:18 -3021
Yuma 08:28:16 -69.7 Dark Up 75.3 215.0 Up 08:17:17 - 08:39:16 -3080

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 2021/02/28 01:14:51 UT

Marc W. Buie, Southwest Research Institute

RECON