RECON: TNO occultation with 8405

Event between (8405) Asbolus and star GA1300:03023928 with event index number of 1242386

Geocentric closest approach at 2023/02/02 07:01:02 UTC

J2000 position of star is 05:41:04.4 +41:20:03
Equinox of date position of star is 05:42:27.0 +41:20:34
Stellar brightness G=15.7, use SENSEUP=128
Star is 16 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 24.5 AU from the Sun and 23.9 AU from the Earth.
The TNO is moving 18.0 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 202 seconds.
The 1-sigma cross-track error in the shadow position is 1654 km.
The sky-plane scale is 17300.8 km/arcsec.

The TNO has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 5.1 sec chord
Diameter=37.2 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 8405, (2023/02/02 07:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.9 +16:33:14  0.8 28.51  27
34Bet Aur      06:01:13.4 +44:56:50  1.9  4.94  18
PPM 048217     05:35:07.4 +42:07:23  6.2  1.62  18
PPM 048329     05:40:46.7 +41:22:09  7.1  0.36  17
PPM 048351     05:42:41.4 +41:22:17  9.6  0.03  16
8405           05:42:42.5 +41:20:39 15.7        16
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 4.5 sigma about the mid-time.
The median site spacing is 27.7 km RECON observability=1.0 and success probability=24.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:58:42 -53.9 Dark Up 66.1 261.4 Up 06:43:42 - 07:13:42 -709
Summerland 06:58:43 -54.1 Dark Up 66.3 261.8 Up 06:43:43 - 07:13:43 -741
Penticton 06:58:43 -54.1 Dark Up 66.3 262.1 Up 06:43:43 - 07:13:43 -749
Okanagan Falls 06:58:43 -54.3 Dark Up 66.3 262.5 Up 06:43:43 - 07:13:43 -770
Oliver 06:58:43 -54.4 Dark Up 66.3 262.9 Up 06:43:43 - 07:13:43 -788
Anarchist Mountain Observatory 06:58:42 -54.7 Dark Up 66.2 263.4 Up 06:43:42 - 07:13:42 -807
Oroville 06:58:42 -54.7 Dark Up 66.3 263.5 Up 06:43:42 - 07:13:42 -816
Tonasket 06:58:42 -54.9 Dark Up 66.3 264.1 Up 06:43:42 - 07:13:42 -841
Okanogan 06:58:43 -55.1 Dark Up 66.4 264.7 Up 06:43:43 - 07:13:43 -879
Brewster 06:58:44 -55.3 Dark Up 66.6 265.2 Up 06:43:44 - 07:13:44 -909
Manson/Chelan 06:58:45 -55.3 Dark Up 66.8 265.3 Up 06:43:45 - 07:13:45 -931
Wenatchee 06:58:46 -55.7 Dark Up 67.0 266.3 Up 06:43:46 - 07:13:46 -984
Ellensburg 06:58:47 -55.9 Dark Up 67.2 267.1 Up 06:43:47 - 07:13:47 -1029
Yakima 06:58:47 -56.3 Dark Up 67.2 268.0 Up 06:43:47 - 07:13:47 -1075
Toppenish/White Swan 06:58:46 -56.5 Dark Up 67.1 268.7 Up 06:43:46 - 07:13:46 -1099
Pasco 06:58:41 -57.1 Dark Up 66.2 269.9 Up 06:43:41 - 07:13:41 -1114
PNWRO 06:58:40 -57.4 Dark Up 66.0 270.6 Up 06:43:40 - 07:13:40 -1142
George/Umatilla 06:58:42 -57.3 Dark Up 66.4 270.5 Up 06:43:42 - 07:13:42 -1151
Goldendale 06:58:47 -56.8 Dark Up 67.4 269.7 Up 06:43:47 - 07:13:47 -1160
The Dalles 06:58:49 -56.8 Dark Up 67.6 270.0 Up 06:43:49 - 07:13:49 -1183
Maupin 06:58:49 -57.2 Dark Up 67.5 271.1 Up 06:43:49 - 07:13:49 -1230
Madras/Culver 06:58:49 -57.6 Dark Up 67.6 272.3 Up 06:43:49 - 07:13:49 -1291
Sisters 06:58:51 -57.7 Dark Up 67.9 272.9 Up 06:43:51 - 07:13:51 -1327
Redmond 06:58:49 -57.9 Dark Up 67.6 273.2 Up 06:43:49 - 07:13:49 -1331
Bend 06:58:50 -58.0 Dark Up 67.7 273.6 Up 06:43:50 - 07:13:50 -1354
Oregon Observatory 06:58:51 -58.1 Dark Up 67.7 274.0 Up 06:43:51 - 07:13:51 -1373
La Pine/Gilchrist 06:58:51 -58.2 Dark Up 67.8 274.4 Up 06:43:51 - 07:13:51 -1395
North Lake 06:58:49 -58.8 Dark Up 67.3 275.8 Up 06:43:49 - 07:13:49 -1445
Paisley 06:58:47 -59.4 Dark Up 67.0 277.3 Up 06:43:47 - 07:13:47 -1507
Chiloquin 06:58:53 -58.9 Dark Up 67.9 277.0 Up 06:43:53 - 07:13:53 -1517
Klamath Falls 06:58:52 -59.2 Dark Up 67.8 277.8 Up 06:43:52 - 07:13:52 -1556
Lakeview 06:58:47 -59.9 Dark Up 66.8 278.5 Up 06:43:47 - 07:13:47 -1564
Tulelake 06:58:51 -59.5 Dark Up 67.6 278.6 Up 06:43:51 - 07:13:51 -1586
Cedarville 06:58:46 -60.5 Dark Up 66.5 280.1 Up 06:43:46 - 07:13:46 -1637
Fall River/Burney 06:58:52 -60.3 Dark Up 67.3 280.8 Up 06:43:52 - 07:13:52 -1687
SwRI 06:57:46 -66.6 Dark Up 55.4 287.6 Up 06:42:46 - 07:12:46 -1717
Susanville 06:58:48 -61.1 Dark Up 66.7 282.5 Up 06:43:48 - 07:13:48 -1759
Greenville 06:58:50 -61.2 Dark Up 66.8 283.0 Up 06:43:50 - 07:13:50 -1789
Gimple 06:58:50 -61.2 Dark Up 66.8 283.1 Up 06:43:50 - 07:13:50 -1789
Quincy 06:58:50 -61.3 Dark Up 66.8 283.5 Up 06:43:50 - 07:13:50 -1811
Portola 06:58:48 -61.7 Dark Up 66.4 283.9 Up 06:43:48 - 07:13:48 -1826
Reno 06:58:45 -62.2 Dark Up 65.9 284.6 Up 06:43:45 - 07:13:45 -1857
Carson City 06:58:46 -62.5 Dark Up 65.7 285.4 Up 06:43:46 - 07:13:46 -1896
Yerington 06:58:43 -62.9 Dark Up 65.2 285.9 Up 06:43:43 - 07:13:43 -1918
Gardnerville 06:58:45 -62.7 Dark Up 65.6 285.9 Up 06:43:45 - 07:13:45 -1923
Hawthorne 06:58:41 -63.5 Dark Up 64.7 286.9 Up 06:43:41 - 07:13:41 -1970
Tonopah 06:58:35 -64.6 Dark Up 63.5 288.0 Up 06:43:35 - 07:13:35 -2020
Lee Vining 06:58:43 -63.7 Dark Up 64.9 288.0 Up 06:43:43 - 07:13:43 -2032
Bishop 06:58:41 -64.6 Dark Up 64.2 289.3 Up 06:43:41 - 07:13:41 -2097
Beatty 06:58:33 -65.7 Dark Up 62.8 290.2 Up 06:43:33 - 07:13:33 -2146
Indian Springs 06:58:28 -66.5 Dark Up 61.9 290.9 Up 06:43:28 - 07:13:28 -2180
Lone Pine 06:58:39 -65.3 Dark Up 63.7 290.7 Up 06:43:39 - 07:13:39 -2181
Henderson 06:58:26 -67.3 Dark Up 61.2 291.8 Up 06:43:26 - 07:13:26 -2236
Searchlight/Boulder City 06:58:25 -67.8 Dark Up 60.9 292.8 Up 06:43:25 - 07:13:25 -2298
Patrick 06:58:21 -68.3 Dark Up 60.1 292.9 Up 06:43:21 - 07:13:21 -2299
CPSLO 06:58:51 -64.8 Dark Up 65.1 293.4 Up 06:43:51 - 07:13:51 -2320
Kingman/Dolan Springs 06:58:21 -68.4 Dark Up 60.2 293.3 Up 06:43:21 - 07:13:21 -2324
Laughlin/Bullhead City 06:58:24 -68.2 Dark Up 60.5 293.3 Up 06:43:24 - 07:13:24 -2329
Mohave Valley 06:58:24 -68.4 Dark Up 60.4 293.7 Up 06:43:24 - 07:13:24 -2359
Lake Havasu City 06:58:23 -68.8 Dark Up 60.1 294.4 Up 06:43:23 - 07:13:23 -2401
Parker 06:58:23 -69.1 Dark Up 59.9 294.9 Up 06:43:23 - 07:13:23 -2439
Wildwood 06:58:42 -66.8 Dark Up 63.1 295.4 Up 06:43:42 - 07:13:42 -2454
Idyllwild 06:58:34 -68.2 Dark Up 61.5 295.8 Up 06:43:34 - 07:13:34 -2491
Blythe 06:58:25 -69.4 Dark Up 59.9 295.8 Up 06:43:25 - 07:13:25 -2497
Calipatria 06:58:29 -69.3 Dark Up 60.4 296.6 Up 06:43:29 - 07:13:29 -2554
Yuma 06:58:26 -70.1 Dark Up 59.5 297.2 Up 06:43:26 - 07:13:26 -2597

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 8405, (2023/02/02 07:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.51  27
34Bet Aur      05:59:31.6 +44:56:51  1.9  4.94  18
PPM 048217     05:33:28.7 +42:06:32  6.2  1.62  18
PPM 048329     05:39:08.6 +41:21:29  7.1  0.36  17
PPM 048351     05:41:03.3 +41:21:40  9.6  0.03  16
8405           05:41:04.4 +41:20:03 15.7        16
Positions are for J2000

Event circumstances last updated at 2019/06/16 22:15:55 UT

Marc W. Buie, Southwest Research Institute

RECON