RECON: TNO occultation with 612688

Event between (612688) 03UT292 and star GA0940:02264440 with event index number of 2817018

Geocentric closest approach at 2024/12/16 07:27:05 UTC

J2000 position of star is 06:55:31.0 +05:22:21
Equinox of date position of star is 06:56:42.4 +05:20:33
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 24 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 27.7 AU from the Sun and 26.8 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 257 seconds.
The 1-sigma cross-track error in the shadow position is 1434 km.
The sky-plane scale is 19449.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 10.4 sec chord
Diameter=94.4 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 612688, (2024/12/16 07:27UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:31.4 +07:24:35  0.4 15.13  23
Alhena         06:39:09.2 +16:22:33  1.9 11.86  12
PPM 151776     07:03:15.1 +05:31:10  6.4  1.60  24
PPM 151522     06:56:33.5 +05:24:02  7.4  0.09  23
612688         06:56:50.8 +05:20:20 15.0        24
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 3.5 sigma about the mid-time.
The median site spacing is 21.7 km RECON observability=1.0 and success probability=26.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:27:31 -60.8 Dark Up 42.2 163.1 Up 07:12:31 - 07:42:31 1683
Kamloops 07:28:14 -62.1 Dark Up 39.5 144.5 Up 07:13:14 - 07:43:14 1664
Kelowna 07:28:14 -63.0 Dark Up 40.5 145.2 Up 07:13:14 - 07:43:14 1596
Peachland 07:28:14 -63.1 Dark Up 40.5 144.8 Up 07:13:14 - 07:43:14 1590
Summerland 07:28:14 -63.2 Dark Up 40.6 144.8 Up 07:13:14 - 07:43:14 1578
Penticton 07:28:14 -63.3 Dark Up 40.7 144.9 Up 07:13:14 - 07:43:14 1572
Victoria 07:28:14 -63.5 Dark Up 40.0 139.8 Up 07:13:14 - 07:43:14 1554
Oliver 07:28:14 -63.7 Dark Up 41.0 144.7 Up 07:13:14 - 07:43:14 1545
Anarchist Mountain Observatory 07:28:14 -63.9 Dark Up 41.2 144.9 Up 07:13:14 - 07:43:14 1531
Tonasket 07:28:14 -64.1 Dark Up 41.4 144.7 Up 07:13:14 - 07:43:14 1507
Okanogan 07:28:14 -64.5 Dark Up 41.7 144.3 Up 07:13:14 - 07:43:14 1483
Brewster 07:28:14 -64.7 Dark Up 41.8 143.9 Up 07:13:14 - 07:43:14 1465
Manson/Chelan 07:28:14 -64.8 Dark Up 41.8 143.3 Up 07:13:14 - 07:43:14 1454
Wenatchee 07:28:14 -65.2 Dark Up 42.1 142.9 Up 07:13:14 - 07:43:14 1421
Ellensburg 07:28:14 -65.6 Dark Up 42.4 142.4 Up 07:13:14 - 07:43:14 1394
Yakima 07:28:14 -66.0 Dark Up 42.7 142.1 Up 07:13:14 - 07:43:14 1365
Toppenish/White Swan 07:28:14 -66.2 Dark Up 42.9 142.2 Up 07:13:14 - 07:43:14 1346
Goldendale 07:28:14 -66.7 Dark Up 43.2 141.4 Up 07:13:14 - 07:43:14 1315
The Dalles 07:28:14 -66.8 Dark Up 43.2 140.8 Up 07:13:14 - 07:43:14 1307
PNWRO 07:28:14 -66.9 Dark Up 43.8 143.9 Up 07:13:14 - 07:43:14 1294
Maupin 07:28:14 -67.2 Dark Up 43.6 140.7 Up 07:13:14 - 07:43:14 1275
Sisters 07:28:31 -67.9 Dark Up 44.0 139.6 Up 07:13:31 - 07:43:31 1167
Bend 07:28:30 -68.2 Dark Up 44.3 139.8 Up 07:13:30 - 07:43:30 1145
Oregon Observatory 07:28:31 -68.4 Dark Up 44.4 139.5 Up 07:13:31 - 07:43:31 1132
North Lake 07:28:30 -69.1 Dark Up 45.2 139.8 Up 07:13:30 - 07:43:30 1074
Chiloquin 07:28:35 -69.5 Dark Up 45.2 138.2 Up 07:13:35 - 07:43:35 1024
Klamath Falls 07:28:35 -69.8 Dark Up 45.5 138.0 Up 07:13:35 - 07:43:35 994
Lakeview 07:28:31 -70.2 Dark Up 46.2 139.8 Up 07:13:31 - 07:43:31 979
Cedarville 07:28:31 -70.9 Dark Up 46.8 139.5 Up 07:13:31 - 07:43:31 921
Fall River/Burney 07:28:36 -71.0 Dark Up 46.6 137.7 Up 07:13:36 - 07:43:36 889
Susanville 07:28:35 -71.8 Dark Up 47.4 138.2 Up 07:13:35 - 07:43:35 828
Greenville 07:28:36 -72.0 Dark Up 47.5 137.6 Up 07:13:36 - 07:43:36 805
Gimple 07:28:36 -72.0 Dark Up 47.5 137.7 Up 07:13:36 - 07:43:36 805
Quincy 07:28:36 -72.2 Dark Up 47.6 137.5 Up 07:13:36 - 07:43:36 787
Portola 07:28:35 -72.4 Dark Up 48.0 138.0 Up 07:13:35 - 07:43:35 773
Reno 07:28:33 -72.9 Dark Up 48.5 138.6 Up 07:13:33 - 07:43:33 744
Carson City 07:28:34 -73.2 Dark Up 48.8 138.3 Up 07:13:34 - 07:43:34 712
Dunrhomin 07:27:40 -71.8 Dark Up 53.6 160.1 Up 07:12:40 - 07:42:40 701
Gardnerville 07:28:34 -73.4 Dark Up 49.0 138.2 Up 07:13:34 - 07:43:34 689
Yerington 07:28:32 -73.5 Dark Up 49.2 139.0 Up 07:13:32 - 07:43:32 689
CU-SBO 07:27:41 -72.1 Dark Up 53.8 159.9 Up 07:12:41 - 07:42:41 679
Tonopah 07:28:14 -74.9 Dark Up 50.9 140.8 Up 07:13:14 - 07:43:14 657
Hawthorne 07:28:31 -74.1 Dark Up 49.9 139.4 Up 07:13:31 - 07:43:31 643
Lee Vining 07:28:34 -74.5 Dark Up 50.0 138.3 Up 07:13:34 - 07:43:34 596
Beatty 07:28:14 -76.1 Dark Up 52.0 140.5 Up 07:13:14 - 07:43:14 561
Bishop 07:28:32 -75.3 Dark Up 50.9 138.7 Up 07:13:32 - 07:43:32 535
Indian Springs 07:28:14 -76.6 Dark Up 52.8 141.8 Up 07:13:14 - 07:43:14 489
Henderson 07:28:14 -77.2 Dark Up 53.6 142.3 Up 07:13:14 - 07:43:14 421
Laughlin/Bullhead City 07:28:14 -78.1 Dark Up 54.5 142.2 Up 07:13:14 - 07:43:14 341
Patrick 07:28:14 -77.9 Dark Up 54.6 143.5 Up 07:13:14 - 07:43:14 331
Calipatria 07:28:14 -80.0 Dark Up 55.6 138.9 Up 07:13:14 - 07:43:14 323
Mohave Valley 07:28:14 -78.4 Dark Up 54.7 142.0 Up 07:13:14 - 07:43:14 322
Kingman/Dolan Springs 07:28:14 -78.1 Dark Up 54.7 143.0 Up 07:13:14 - 07:43:14 320
Lake Havasu City 07:28:14 -78.8 Dark Up 55.1 142.0 Up 07:13:14 - 07:43:14 283
Parker 07:28:14 -79.1 Dark Up 55.4 141.7 Up 07:13:14 - 07:43:14 261
Yuma 07:28:14 -80.6 Dark Up 56.4 139.8 Up 07:13:14 - 07:43:14 245
Wildwood 07:28:37 -78.3 Dark Up 53.2 135.7 Up 07:13:37 - 07:43:37 231
Idyllwild 07:28:31 -79.2 Dark Up 54.5 137.9 Up 07:13:31 - 07:43:31 181
George/Scottsdale 07:28:12 -79.6 Dark Up 57.0 145.1 Up 07:13:12 - 07:43:12 140

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 612688, (2024/12/16 07:27UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.13  23
Alhena         06:37:42.8 +16:23:56  1.9 11.86  12
PPM 151776     07:01:55.2 +05:33:25  6.4  1.60  24
PPM 151522     06:55:13.7 +05:26:02  7.4  0.09  23
612688         06:55:31.0 +05:22:21 15.0        24
Positions are for J2000

Event circumstances last updated at 2022/05/03 23:59:13 UT

Marc W. Buie, Southwest Research Institute

RECON