RECON: TNO occultation with 11UD63

Event between 11UD63 and star GA1180:01661697 with event index number of 1654337

Geocentric closest approach at 2027/01/13 05:55:07 UTC

J2000 position of star is 05:39:31.1 +29:24:47
Equinox of date position of star is 05:40:48.6 +29:25:22
Stellar brightness G=14.0, use SENSEUP=64
Star is 93 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 14.1 AU from the Sun and 13.3 AU from the Earth.
The TNO is moving 19.3 km/sec on the sky relative to the star, or, 7.2 arcsec/hr.
The 1-sigma error in the time of the event is 736 seconds.
The 1-sigma cross-track error in the shadow position is 3749 km.
The sky-plane scale is 9619.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=105.7 km assuming a 5% albedo -- 3.1 sec chord
Diameter=43.1 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 11UD63, (2027/01/13 05:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.5 +16:33:42  0.8 19.47  78
Alnath         05:28:00.2 +28:37:41  1.6  3.00  90
PPM 094619     05:41:01.5 +29:13:41  5.9  0.20  93
PPM 094672     05:43:05.0 +29:30:21  7.8  0.41  94
PPM 094619     05:41:01.5 +29:13:41  5.9  0.20  93
PPM 094620     05:41:05.1 +29:32:47 11.2  0.13  93
11UD63         05:41:14.5 +29:25:34 14.0        94
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 1.2 sigma about the mid-time.
The median site spacing is 24.7 km RECON observability=1.0 and success probability=12.0%
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 05:55:00 -51.5 Dark Down 69.0 172.8 Up 05:40:00 - 06:10:00 4257
Kelowna 05:55:01 -51.6 Dark Down 69.4 172.3 Up 05:40:01 - 06:10:01 4220
Peachland 05:55:02 -51.6 Dark Down 69.5 171.5 Up 05:40:02 - 06:10:02 4213
Summerland 05:55:02 -51.7 Dark Down 69.7 171.7 Up 05:40:02 - 06:10:02 4196
Penticton 05:55:02 -51.8 Dark Down 69.7 172.0 Up 05:40:02 - 06:10:02 4188
Oliver 05:55:02 -52.0 Dark Down 70.1 171.8 Up 05:40:02 - 06:10:02 4152
Victoria 05:55:17 -50.2 Dark Up 70.2 161.8 Up 05:40:17 - 06:10:17 4145
Anarchist Mountain Observatory 05:55:02 -52.2 Dark Down 70.3 172.3 Up 05:40:02 - 06:10:02 4132
Tonasket 05:55:02 -52.3 Dark Down 70.6 172.0 Up 05:40:02 - 06:10:02 4101
Okanogan 05:55:04 -52.4 Dark Down 70.9 171.4 Up 05:40:04 - 06:10:04 4069
Brewster 05:55:04 -52.5 Dark Down 71.1 170.8 Up 05:40:04 - 06:10:04 4044
Manson/Chelan 05:55:06 -52.4 Dark Down 71.3 169.7 Up 05:40:06 - 06:10:06 4028
Entiat 05:55:06 -52.5 Dark Down 71.5 169.4 Up 05:40:06 - 06:10:06 4006
Wenatchee 05:55:07 -52.6 Dark Down 71.7 169.0 Up 05:40:07 - 06:10:07 3982
Ellensburg 05:55:08 -52.6 Dark Up 72.1 168.2 Up 05:40:08 - 06:10:08 3942
Yakima 05:55:09 -52.8 Dark Up 72.5 167.8 Up 05:40:09 - 06:10:09 3901
Toppenish/White Swan 05:55:09 -53.1 Dark Up 72.8 168.2 Up 05:40:09 - 06:10:09 3875
Pasco 05:55:04 -53.9 Dark Down 73.0 171.8 Up 05:40:04 - 06:10:04 3843
Goldendale 05:55:11 -53.1 Dark Up 73.2 166.6 Up 05:40:11 - 06:10:11 3825
PNWRO 05:55:03 -54.1 Dark Down 73.3 172.4 Up 05:40:03 - 06:10:03 3814
The Dalles 05:55:13 -53.0 Dark Up 73.4 165.3 Up 05:40:13 - 06:10:13 3807
Maupin 05:55:13 -53.2 Dark Up 73.8 165.3 Up 05:40:13 - 06:10:13 3762
Sisters 05:55:16 -53.3 Dark Up 74.6 162.9 Up 05:40:16 - 06:10:16 3679
Redmond 05:55:14 -53.6 Dark Up 74.7 164.2 Up 05:40:14 - 06:10:14 3669
Bend 05:55:15 -53.6 Dark Up 74.8 163.5 Up 05:40:15 - 06:10:15 3649
Oregon Observatory 05:55:16 -53.6 Dark Up 75.0 162.9 Up 05:40:16 - 06:10:16 3634
La Pine/Gilchrist 05:55:16 -53.7 Dark Up 75.2 162.5 Up 05:40:16 - 06:10:16 3613
North Lake 05:55:15 -54.3 Dark Up 75.7 164.0 Up 05:40:15 - 06:10:15 3557
Paisley 05:55:14 -54.7 Dark Up 76.3 164.7 Up 05:40:14 - 06:10:14 3493
Klamath Falls 05:55:19 -54.1 Dark Up 76.5 159.7 Up 05:40:19 - 06:10:19 3465
Lakeview 05:55:14 -55.1 Dark Up 76.8 164.8 Up 05:40:14 - 06:10:14 3436
Cedarville 05:55:14 -55.5 Dark Down 77.5 164.7 Up 05:40:14 - 06:10:14 3364
Fall River/Burney 05:55:19 -54.9 Dark Up 77.7 159.3 Up 05:40:19 - 06:10:19 3334
Susanville 05:55:17 -55.6 Dark Up 78.5 161.3 Up 05:40:17 - 06:10:17 3254
Greenville 05:55:18 -55.5 Dark Up 78.7 159.6 Up 05:40:18 - 06:10:18 3229
Gimple 05:55:18 -55.6 Dark Up 78.7 160.0 Up 05:40:18 - 06:10:18 3228
Quincy 05:55:19 -55.6 Dark Up 78.8 159.3 Up 05:40:19 - 06:10:19 3208
Portola 05:55:17 -56.0 Dark Up 79.1 161.1 Up 05:40:17 - 06:10:17 3186
Reno 05:55:15 -56.5 Dark Down 79.5 163.6 Up 05:40:15 - 06:10:15 3146
Carson City 05:55:15 -56.7 Dark Down 79.8 163.1 Up 05:40:15 - 06:10:15 3107
Gardnerville 05:55:15 -56.8 Dark Down 80.1 162.9 Up 05:40:15 - 06:10:15 3081
Yerington 05:55:13 -57.2 Dark Down 80.2 165.9 Up 05:40:13 - 06:10:13 3076
Niwot 05:54:11 -65.5 Dark Down 76.0 223.5 Up 05:39:11 - 06:09:11 3033
SwRI 05:54:12 -65.5 Dark Down 76.2 223.5 Up 05:39:12 - 06:09:12 3022
Hawthorne 05:55:10 -57.8 Dark Down 80.7 167.9 Up 05:40:10 - 06:10:10 3017
Lee Vining 05:55:13 -57.6 Dark Down 81.2 164.5 Up 05:40:13 - 06:10:13 2965
Tonopah 05:55:05 -59.0 Dark Down 81.3 175.2 Up 05:40:05 - 06:10:05 2944
Bishop 05:55:11 -58.4 Dark Down 81.9 167.7 Up 05:40:11 - 06:10:11 2888
Beatty 05:55:04 -59.7 Dark Down 82.5 177.5 Up 05:40:04 - 06:10:04 2812
Indian Springs 05:54:59 -60.6 Dark Down 82.8 184.8 Up 05:39:59 - 06:09:59 2760
CPSLO 05:55:23 -57.3 Dark Up 83.1 147.8 Up 05:40:23 - 06:10:23 2706
Henderson 05:54:57 -61.4 Dark Down 83.3 190.2 Up 05:39:57 - 06:09:57 2691
Searchlight/Boulder City 05:54:57 -61.6 Dark Down 83.8 191.7 Up 05:39:57 - 06:09:57 2628
Patrick 05:54:52 -62.4 Dark Down 83.7 199.8 Up 05:39:52 - 06:09:52 2607
Laughlin/Bullhead City 05:54:56 -62.0 Dark Down 84.1 195.1 Up 05:39:56 - 06:09:56 2591
Kingman/Dolan Springs 05:54:53 -62.4 Dark Down 83.9 199.1 Up 05:39:53 - 06:09:53 2586
DCO 05:54:49 -63.1 Dark Down 83.7 206.0 Up 05:39:49 - 06:09:49 2564
Mohave Valley 05:54:56 -62.1 Dark Down 84.3 195.8 Up 05:39:56 - 06:09:56 2561
Wildwood 05:55:15 -59.3 Dark Down 85.0 157.9 Up 05:40:15 - 06:10:15 2537
Lake Havasu City 05:54:55 -62.4 Dark Down 84.6 199.2 Up 05:39:55 - 06:09:55 2513
Parker 05:54:55 -62.6 Dark Down 85.0 200.8 Up 05:39:55 - 06:09:55 2475
Idyllwild 05:55:07 -60.8 Dark Down 85.7 176.3 Up 05:40:07 - 06:10:07 2467
Blythe 05:54:57 -62.5 Dark Down 85.5 200.1 Up 05:39:57 - 06:09:57 2422
George/Scottsdale 05:54:44 -64.6 Dark Down 84.3 222.6 Up 05:39:44 - 06:09:44 2395
Calipatria 05:55:02 -61.9 Dark Down 86.2 191.3 Up 05:40:02 - 06:10:02 2382
Yuma 05:54:58 -62.8 Dark Down 86.4 204.7 Up 05:39:58 - 06:09:58 2321

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 11UD63, (2027/01/13 05:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.47  78
Alnath         05:26:17.5 +28:36:23  1.6  3.00  90
PPM 094619     05:39:18.3 +29:12:54  5.9  0.20  93
PPM 094672     05:41:21.5 +29:29:39  7.8  0.41  94
PPM 094619     05:39:18.3 +29:12:54  5.9  0.20  93
PPM 094620     05:39:21.6 +29:32:00 11.2  0.13  93
11UD63         05:39:31.1 +29:24:47 14.0        93
Positions are for J2000

Event circumstances last updated at 2020/04/04 21:32:55 UT

Marc W. Buie, Southwest Research Institute

RECON