RECON: TNO occultation with 12BZ159

Event between 12BZ159 and star GA0900:03801390 with event index number of 1587610

Geocentric closest approach at 2022/03/02 12:40:29 UTC

J2000 position of star is 11:48:15.6 +01:41:40
Equinox of date position of star is 11:49:15.6 +01:35:10
Stellar brightness G=15.3, use SENSEUP=128
Star is 162 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 38.1 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 23.8 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 203 seconds.
The 1-sigma cross-track error in the shadow position is 3315 km.
The sky-plane scale is 26961.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=285.8 km assuming a 5% albedo -- 12.0 sec chord
Diameter=116.7 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 12BZ159, (2022/03/02 12:40UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:33.1 +11:51:29  1.3 26.81 170
Denebola       11:50:11.4 +14:26:53  2.1 12.88 166
5Bet Vir       11:51:50.9 +01:38:24  3.6  0.62 162
PPM 158245     11:50:54.9 +02:06:30  8.0  0.66 162
PPM 158212     11:48:33.7 +01:53:24  8.9  0.38 162
PPM 158225     11:49:11.9 +01:40:34 11.3  0.12 162
12BZ159        11:49:23.8 +01:34:16 15.3       162
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 4.4 sigma about the mid-time.
The median site spacing is 9.5 km RECON observability=1.0 and success probability=6.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 12:39:48 -19.8 Dark Down 23.8 241.8 Low 12:24:48 - 12:54:48 1536
Summerland 12:39:48 -20.0 Dark Down 24.1 241.6 Low 12:24:48 - 12:54:48 1519
Penticton 12:39:47 -20.0 Dark Down 24.0 241.8 Low 12:24:47 - 12:54:47 1519
Okanagan Falls 12:39:46 -20.0 Dark Down 24.1 241.8 Low 12:24:46 - 12:54:46 1511
Oliver 12:39:46 -20.1 Dark Down 24.2 241.9 Low 12:24:46 - 12:54:46 1505
Anarchist Mountain Observatory 12:39:45 -20.0 Dark Down 24.2 242.1 Low 12:24:45 - 12:54:45 1502
Oroville 12:39:45 -20.1 Dark Down 24.3 242.1 Low 12:24:45 - 12:54:45 1498
Tonasket 12:39:44 -20.1 Dark Down 24.4 242.2 Low 12:24:44 - 12:54:44 1489
Okanogan 12:39:43 -20.3 Dark Down 24.6 242.2 Low 12:24:43 - 12:54:43 1472
Brewster 12:39:42 -20.5 Dark Down 24.9 242.1 Low 12:24:42 - 12:54:42 1457
Manson/Chelan 12:39:42 -20.8 Dark Down 25.2 241.9 Low 12:24:42 - 12:54:42 1441
Wenatchee 12:39:40 -21.0 Dark Down 25.5 241.9 Low 12:24:40 - 12:54:40 1418
Ellensburg 12:39:39 -21.2 Dark Down 25.8 241.9 Low 12:24:39 - 12:54:39 1396
Pasco 12:39:33 -20.4 Dark Down 25.3 243.4 Low 12:24:33 - 12:54:33 1393
PNWRO 12:39:32 -20.3 Dark Down 25.3 243.7 Low 12:24:32 - 12:54:32 1387
Yakima 12:39:38 -21.3 Dark Down 26.0 242.1 Low 12:24:38 - 12:54:38 1378
George/Umatilla 12:39:33 -20.7 Dark Down 25.6 243.4 Low 12:24:33 - 12:54:33 1374
Toppenish/White Swan 12:39:36 -21.3 Dark Down 26.0 242.3 Low 12:24:36 - 12:54:36 1372
SwRI 12:38:49 -11.1 NT Down 18.1 256.5 Really Low 12:23:49 - 12:53:49 1358
Goldendale 12:39:35 -21.7 Dark Down 26.6 242.2 Low 12:24:35 - 12:54:35 1338
The Dalles 12:39:35 -22.0 Dark Down 26.9 241.9 Low 12:24:35 - 12:54:35 1320
Maupin 12:39:33 -22.0 Dark Down 27.0 242.2 Low 12:24:33 - 12:54:33 1303
Madras/Culver 12:39:31 -22.1 Dark Down 27.3 242.4 Low 12:24:31 - 12:54:31 1277
Redmond 12:39:30 -22.3 Dark Down 27.5 242.5 Low 12:24:30 - 12:54:30 1259
Sisters 12:39:31 -22.5 Dark Down 27.8 242.2 Low 12:24:31 - 12:54:31 1251
Bend 12:39:29 -22.4 Dark Down 27.7 242.5 Low 12:24:29 - 12:54:29 1245
Oregon Observatory 12:39:29 -22.5 Dark Down 27.9 242.5 Low 12:24:29 - 12:54:29 1234
La Pine/Gilchrist 12:39:28 -22.6 Dark Down 28.0 242.5 Low 12:24:28 - 12:54:28 1222
North Lake 12:39:26 -22.3 Dark Down 27.8 243.2 Low 12:24:26 - 12:54:26 1215
Paisley 12:39:23 -22.2 Dark Down 27.8 243.8 Low 12:24:23 - 12:54:23 1195
Lakeview 12:39:21 -22.1 Dark Down 27.9 244.2 Low 12:24:21 - 12:54:21 1174
Chiloquin 12:39:25 -23.1 Dark Down 28.8 242.7 Low 12:24:25 - 12:54:25 1159
Cedarville 12:39:18 -22.1 Dark Down 28.1 244.6 Low 12:24:18 - 12:54:18 1145
Klamath Falls 12:39:23 -23.1 Dark Down 28.9 243.0 Low 12:24:23 - 12:54:23 1143
Tulelake 12:39:22 -23.0 Dark Down 28.8 243.3 Low 12:24:22 - 12:54:22 1136
Fall River/Burney 12:39:19 -23.1 Dark Down 29.2 243.8 Low 12:24:19 - 12:54:19 1091
Susanville 12:39:14 -22.7 Dark Down 28.9 244.8 Low 12:24:14 - 12:54:14 1074
Gimple 12:39:14 -22.9 Dark Down 29.2 244.7 Low 12:24:14 - 12:54:14 1054
Greenville 12:39:14 -23.0 Dark Down 29.3 244.7 Low 12:24:14 - 12:54:14 1052
Reno 12:39:10 -22.2 Dark Down 28.7 245.9 Low 12:24:10 - 12:54:10 1047
Portola 12:39:12 -22.7 Dark Down 29.1 245.2 Low 12:24:12 - 12:54:12 1046
Quincy 12:39:14 -23.0 Dark Down 29.3 244.8 Low 12:24:14 - 12:54:14 1042
Yerington 12:39:06 -21.8 Dark Down 28.5 246.7 Low 12:24:06 - 12:54:06 1032
Carson City 12:39:08 -22.3 Dark Down 28.9 246.1 Low 12:24:08 - 12:54:08 1027
Tonopah 12:38:59 -20.5 Dark Down 27.5 248.6 Low 12:23:59 - 12:53:59 1024
Hawthorne 12:39:04 -21.5 Dark Down 28.3 247.3 Low 12:24:04 - 12:54:04 1018
Gardnerville 12:39:08 -22.3 Dark Down 28.9 246.2 Low 12:24:08 - 12:54:08 1015
Lee Vining 12:39:03 -22.0 Dark Down 28.9 247.2 Low 12:24:03 - 12:54:03 974
Indian Springs 12:38:51 -19.4 Dark Down 26.9 250.5 Low 12:23:51 - 12:53:51 974
Beatty 12:38:54 -20.3 Dark Down 27.6 249.5 Low 12:23:54 - 12:53:54 968
Henderson 12:38:48 -18.9 Dark Down 26.5 251.2 Low 12:23:48 - 12:53:48 958
Bishop 12:38:59 -21.5 Dark Down 28.6 248.1 Low 12:23:59 - 12:53:59 957
Patrick 12:38:44 -18.1 Dark Down 25.9 252.3 Low 12:23:44 - 12:53:44 945
Kingman/Dolan Springs 12:38:43 -18.3 Dark Down 26.1 252.3 Low 12:23:43 - 12:53:43 928
Searchlight/Boulder City 12:38:46 -19.0 Dark Down 26.7 251.5 Low 12:23:46 - 12:53:46 925
Lone Pine 12:38:56 -21.3 Dark Down 28.6 248.7 Low 12:23:56 - 12:53:56 920
Laughlin/Bullhead City 12:38:44 -18.7 Dark Down 26.5 251.9 Low 12:23:44 - 12:53:44 915
Mohave Valley 12:38:43 -18.7 Dark Down 26.6 252.0 Low 12:23:43 - 12:53:43 898
Lake Havasu City 12:38:41 -18.6 Dark Down 26.5 252.4 Low 12:23:41 - 12:53:41 880
Parker 12:38:40 -18.6 Dark Down 26.6 252.6 Low 12:23:40 - 12:53:40 859
Blythe 12:38:39 -18.8 Dark Down 27.0 252.6 Low 12:23:39 - 12:53:39 819
CPSLO 12:38:57 -23.6 Dark Down 31.1 247.4 Up 12:23:57 - 12:53:57 778
Idyllwild 12:38:43 -20.6 Dark Down 28.6 251.1 Low 12:23:43 - 12:53:43 777
Calipatria 12:38:38 -19.7 Dark Down 27.9 252.2 Low 12:23:38 - 12:53:38 767
Yuma 12:38:35 -19.0 Dark Down 27.3 253.0 Low 12:23:35 - 12:53:35 760
Wildwood 12:38:48 -22.1 Dark Down 30.0 249.6 Low 12:23:48 - 12:53:48 754

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 12BZ159, (2022/03/02 12:40UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 26.81 170
Denebola       11:49:02.9 +14:34:17  2.1 12.88 166
5Bet Vir       11:50:42.7 +01:45:48  3.6  0.62 162
PPM 158245     11:49:46.7 +02:13:54  8.0  0.66 162
PPM 158212     11:47:25.5 +02:00:48  8.9  0.38 162
PPM 158225     11:48:03.7 +01:47:58 11.3  0.12 162
12BZ159        11:48:15.6 +01:41:40 15.3       162
Positions are for J2000

Event circumstances last updated at 2019/07/03 22:10:14 UT

Marc W. Buie, Southwest Research Institute

RECON