RECON: TNO occultation with 612048

Event between (612048) 96TS66 and star GA1160:01568852 with event index number of 2804062

Geocentric closest approach at 2027/12/04 09:05:22 UTC

J2000 position of star is 05:41:36.7 +26:00:41
Equinox of date position of star is 05:43:00.1 +26:01:15
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 38.6 AU from the Sun and 37.6 AU from the Earth.
The TNO is moving 24.3 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 348 seconds.
The 1-sigma cross-track error in the shadow position is 1678 km.
The sky-plane scale is 27276.2 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=350.0 km assuming a 5% albedo -- 14.4 sec chord
Diameter=142.9 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 612048, (2027/12/04 09:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.6 +16:33:48  0.8 17.99 108
Alnath         05:28:03.6 +28:37:43  1.6  4.28 120
125 Tau        05:41:28.1 +25:54:36  5.2  0.44 123
PPM 094677     05:43:21.3 +26:37:39  8.1  0.60 124
PPM 094688     05:43:37.0 +26:03:05  9.9  0.07 124
612048         05:43:20.7 +26:01:23 14.6       124
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 2.6 sigma about the mid-time.
The median site spacing is 29.9 km RECON observability=1.0 and success probability=10.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:04:30 -51.0 Dark Down 60.7 214.0 Up 08:49:30 - 09:19:30 -2707
Kamloops 09:05:09 -58.1 Dark Down 65.2 187.5 Up 08:50:09 - 09:20:09 -2886
Kelowna 09:05:07 -58.5 Dark Down 65.9 189.7 Up 08:50:07 - 09:20:07 -2970
Peachland 09:05:07 -58.7 Dark Down 66.1 189.0 Up 08:50:07 - 09:20:07 -2981
Summerland 09:05:07 -58.8 Dark Down 66.2 189.3 Up 08:50:07 - 09:20:07 -2996
Penticton 09:05:07 -58.8 Dark Down 66.2 189.6 Up 08:50:07 - 09:20:07 -3003
Oliver 09:05:07 -59.1 Dark Down 66.6 189.7 Up 08:50:07 - 09:20:07 -3039
Anarchist Mountain Observatory 09:05:06 -59.1 Dark Down 66.7 190.2 Up 08:50:06 - 09:20:06 -3056
Tonasket 09:05:07 -59.4 Dark Down 67.1 190.2 Up 08:50:07 - 09:20:07 -3088
Victoria 09:05:18 -61.0 Dark Down 67.5 181.1 Up 08:50:18 - 09:20:18 -3100
Okanogan 09:05:07 -59.7 Dark Down 67.4 190.0 Up 08:50:07 - 09:20:07 -3123
Brewster 09:05:07 -60.0 Dark Down 67.7 189.6 Up 08:50:07 - 09:20:07 -3150
Manson/Chelan 09:05:08 -60.3 Dark Down 67.9 188.8 Up 08:50:08 - 09:20:08 -3172
Wenatchee 09:05:09 -60.8 Dark Down 68.4 188.6 Up 08:50:09 - 09:20:09 -3220
Ellensburg 09:05:10 -61.2 Dark Down 68.9 188.2 Up 08:50:10 - 09:20:10 -3263
Yakima 09:05:10 -61.5 Dark Down 69.3 188.4 Up 08:50:10 - 09:20:10 -3305
Toppenish/White Swan 09:05:09 -61.6 Dark Down 69.5 188.9 Up 08:50:09 - 09:20:09 -3328
PNWRO 09:05:05 -61.3 Dark Down 69.6 192.8 Up 08:50:05 - 09:20:05 -3368
Goldendale 09:05:10 -62.2 Dark Down 70.0 188.0 Up 08:50:10 - 09:20:10 -3385
The Dalles 09:05:11 -62.6 Dark Down 70.3 187.1 Up 08:50:11 - 09:20:11 -3408
Maupin 09:05:11 -62.9 Dark Down 70.7 187.6 Up 08:50:11 - 09:20:11 -3452
Sisters 09:05:13 -63.8 Dark Down 71.6 186.5 Up 08:50:13 - 09:20:13 -3544
Bend 09:05:12 -63.8 Dark Down 71.8 187.3 Up 08:50:12 - 09:20:12 -3569
Oregon Observatory 09:05:13 -64.0 Dark Down 72.0 187.0 Up 08:50:13 - 09:20:13 -3588
North Lake 09:05:11 -64.3 Dark Down 72.6 188.9 Up 08:50:11 - 09:20:11 -3656
Chiloquin 09:05:14 -65.2 Dark Down 73.4 186.3 Up 08:50:14 - 09:20:14 -3726
Klamath Falls 09:05:14 -65.5 Dark Down 73.7 186.7 Up 08:50:14 - 09:20:14 -3763
Lakeview 09:05:09 -64.8 Dark Down 73.6 191.2 Up 08:50:09 - 09:20:09 -3770
Cedarville 09:05:08 -65.2 Dark Down 74.2 192.2 Up 08:50:08 - 09:20:08 -3840
Fall River/Burney 09:05:13 -66.2 Dark Down 74.8 188.5 Up 08:50:13 - 09:20:13 -3890
Dunrhomin 09:04:18 -56.5 Dark Down 69.1 232.8 Up 08:49:18 - 09:19:18 -3925
CU-SBO 09:04:19 -56.7 Dark Down 69.3 233.1 Up 08:49:19 - 09:19:19 -3953
Susanville 09:05:10 -66.2 Dark Down 75.4 191.4 Up 08:50:10 - 09:20:10 -3959
Greenville 09:05:11 -66.6 Dark Down 75.7 190.6 Up 08:50:11 - 09:20:11 -3988
Gimple 09:05:11 -66.5 Dark Down 75.7 190.9 Up 08:50:11 - 09:20:11 -3989
Quincy 09:05:11 -66.7 Dark Down 75.9 190.8 Up 08:50:11 - 09:20:11 -4010
Portola 09:05:10 -66.5 Dark Down 75.9 192.6 Up 08:50:10 - 09:20:10 -4025
Reno 09:05:07 -66.3 Dark Down 76.1 195.1 Up 08:50:07 - 09:20:07 -4054
Carson City 09:05:07 -66.6 Dark Down 76.4 195.6 Up 08:50:07 - 09:20:07 -4093
Yerington 09:05:05 -66.3 Dark Down 76.4 198.2 Up 08:50:05 - 09:20:05 -4115
Gardnerville 09:05:07 -66.7 Dark Down 76.6 196.1 Up 08:50:07 - 09:20:07 -4119
Hawthorne 09:05:03 -66.3 Dark Down 76.7 200.8 Up 08:50:03 - 09:20:03 -4165
Tonopah 09:04:58 -65.7 Dark Down 76.7 206.7 Up 08:49:58 - 09:19:58 -4216
Lee Vining 09:05:05 -66.9 Dark Down 77.4 199.8 Up 08:50:05 - 09:20:05 -4226
Bishop 09:05:03 -66.8 Dark Down 77.8 203.6 Up 08:50:03 - 09:20:03 -4292
Beatty 09:04:56 -66.0 Dark Down 77.6 210.8 Up 08:49:56 - 09:19:56 -4341
Indian Springs 09:04:53 -65.4 Dark Down 77.4 215.4 Up 08:49:53 - 09:19:53 -4376
Henderson 09:04:50 -65.2 Dark Down 77.5 219.2 Up 08:49:50 - 09:19:50 -4433
Patrick 09:04:45 -64.7 Dark Down 77.3 224.7 Up 08:49:45 - 09:19:45 -4499
Kingman/Dolan Springs 09:04:46 -64.9 Dark Down 77.6 224.9 Up 08:49:46 - 09:19:46 -4524
Laughlin/Bullhead City 09:04:48 -65.3 Dark Down 77.9 223.2 Up 08:49:48 - 09:19:48 -4527
Mohave Valley 09:04:48 -65.4 Dark Down 78.1 224.2 Up 08:49:48 - 09:19:48 -4557
Lake Havasu City 09:04:47 -65.4 Dark Down 78.2 226.3 Up 08:49:47 - 09:19:47 -4601
Parker 09:04:47 -65.5 Dark Down 78.5 227.7 Up 08:49:47 - 09:19:47 -4639
Wildwood 09:05:03 -68.7 Dark Down 80.7 210.5 Up 08:50:03 - 09:20:03 -4649
George/Scottsdale 09:04:38 -63.8 Dark Down 77.2 236.3 Up 08:49:38 - 09:19:38 -4677
Idyllwild 09:04:56 -67.5 Dark Down 80.1 220.3 Up 08:49:56 - 09:19:56 -4688
Calipatria 09:04:51 -66.8 Dark Down 79.9 227.3 Up 08:49:51 - 09:19:51 -4754
Yuma 09:04:48 -66.3 Dark Down 79.6 232.3 Up 08:49:48 - 09:19:48 -4799

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 612048, (2027/12/04 09:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.99 108
Alnath         05:26:17.6 +28:36:23  1.6  4.28 120
125 Tau        05:39:44.2 +25:53:49  5.2  0.44 123
PPM 094677     05:41:36.7 +26:36:56  8.1  0.60 124
PPM 094688     05:41:52.9 +26:02:23  9.9  0.07 124
612048         05:41:36.7 +26:00:41 14.6       124
Positions are for J2000

Event circumstances last updated at 2022/05/18 23:02:25 UT

Marc W. Buie, Southwest Research Institute

RECON