RECON: TNO occultation with 528219

Event between (528219) 08KV42 and star GA1480:05255680 with event index number of 1597094

Geocentric closest approach at 2023/08/04 07:23:04 UTC

J2000 position of star is 15:51:55.1 +58:47:21
Equinox of date position of star is 15:52:18.7 +58:43:54
Stellar brightness G=13.8, use SENSEUP=64
Star is 108 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 24.0 AU from the Sun and 24.1 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 350 seconds.
The 1-sigma cross-track error in the shadow position is 4863 km.
The sky-plane scale is 17510.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 4.5 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 528219, (2023/08/04 07:23UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:44.2 +38:48:23  0.0 32.92  80
23Bet Dra      17:30:58.0 +52:17:05  2.8 15.25  95
PPM 035197     15:56:17.2 +58:50:39  6.1  0.52 107
PPM 035181     15:54:05.9 +58:56:10  8.4  0.31 108
PPM 035163     15:51:36.7 +58:36:29 10.5  0.15 108
528219         15:52:23.6 +58:43:11 13.8       108
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 21.1 km RECON observability=1.0 and success probability=8.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:21:07 -22.2 Dark Up 52.4 309.3 Up 07:06:07 - 07:36:07 -59
Summerland 07:21:08 -22.4 Dark Up 52.4 309.6 Up 07:06:08 - 07:36:08 -89
Penticton 07:21:08 -22.5 Dark Up 52.3 309.7 Up 07:06:08 - 07:36:08 -96
Okanagan Falls 07:21:08 -22.7 Dark Up 52.2 309.9 Up 07:06:08 - 07:36:08 -115
Oliver 07:21:08 -22.8 Dark Up 52.0 310.0 Up 07:06:08 - 07:36:08 -131
Anarchist Mountain Observatory 07:21:08 -23.0 Dark Up 51.8 310.2 Up 07:06:08 - 07:36:08 -148
Oroville 07:21:08 -23.1 Dark Up 51.8 310.3 Up 07:06:08 - 07:36:08 -156
Tonasket 07:21:08 -23.3 Dark Up 51.7 310.5 Up 07:06:08 - 07:36:08 -179
Okanogan 07:21:09 -23.6 Dark Up 51.5 310.8 Up 07:06:09 - 07:36:09 -212
Brewster 07:21:10 -23.9 Dark Up 51.5 311.0 Up 07:06:10 - 07:36:10 -239
Manson/Chelan 07:21:11 -24.0 Dark Up 51.5 311.2 Up 07:06:11 - 07:36:11 -260
Wenatchee 07:21:12 -24.5 Dark Up 51.3 311.6 Up 07:06:12 - 07:36:12 -307
Ellensburg 07:21:13 -24.9 Dark Up 51.1 311.9 Up 07:06:13 - 07:36:13 -347
Yakima 07:21:13 -25.2 Dark Up 50.8 312.3 Up 07:06:13 - 07:36:13 -387
Toppenish/White Swan 07:21:13 -25.5 Dark Up 50.6 312.5 Up 07:06:13 - 07:36:13 -408
Pasco 07:21:10 -25.8 Dark Up 49.9 312.8 Up 07:06:10 - 07:36:10 -419
PNWRO 07:21:09 -26.1 Dark Up 49.6 313.1 Up 07:06:09 - 07:36:09 -443
George/Umatilla 07:21:10 -26.1 Dark Up 49.8 313.1 Up 07:06:10 - 07:36:10 -452
Goldendale 07:21:15 -26.0 Dark Up 50.4 312.9 Up 07:06:15 - 07:36:15 -462
The Dalles 07:21:16 -26.1 Dark Up 50.5 313.1 Up 07:06:16 - 07:36:16 -483
Maupin 07:21:16 -26.5 Dark Up 50.1 313.5 Up 07:06:16 - 07:36:16 -524
Madras/Culver 07:21:17 -27.1 Dark Up 49.8 313.9 Up 07:06:17 - 07:36:17 -576
Sisters 07:21:19 -27.3 Dark Up 49.8 314.2 Up 07:06:19 - 07:36:19 -607
Redmond 07:21:18 -27.4 Dark Up 49.6 314.2 Up 07:06:18 - 07:36:18 -610
Bend 07:21:18 -27.6 Dark Up 49.5 314.4 Up 07:06:18 - 07:36:18 -630
Oregon Observatory 07:21:19 -27.7 Dark Up 49.4 314.5 Up 07:06:19 - 07:36:19 -647
La Pine/Gilchrist 07:21:19 -27.9 Dark Up 49.3 314.7 Up 07:06:19 - 07:36:19 -666
North Lake 07:21:18 -28.5 Dark Up 48.7 315.1 Up 07:06:18 - 07:36:18 -708
Paisley 07:21:18 -29.1 Dark Up 48.1 315.6 Up 07:06:18 - 07:36:18 -760
Chiloquin 07:21:22 -29.0 Dark Up 48.7 315.6 Up 07:06:22 - 07:36:22 -770
Klamath Falls 07:21:22 -29.3 Dark Up 48.4 315.8 Up 07:06:22 - 07:36:22 -802
Lakeview 07:21:18 -29.6 Dark Up 47.6 316.0 Up 07:06:18 - 07:36:18 -807
Tulelake 07:21:22 -29.6 Dark Up 48.1 316.1 Up 07:06:22 - 07:36:22 -828
SwRI 07:20:34 -32.6 Dark Up 38.5 319.4 Up 07:05:34 - 07:35:34 -847
Cedarville 07:21:18 -30.3 Dark Up 47.1 316.5 Up 07:06:18 - 07:36:18 -868
Fall River/Burney 07:21:22 -30.5 Dark Up 47.4 316.8 Up 07:06:22 - 07:36:22 -912
Susanville 07:21:21 -31.3 Dark Up 46.5 317.3 Up 07:06:21 - 07:36:21 -970
Greenville 07:21:22 -31.5 Dark Up 46.5 317.5 Up 07:06:22 - 07:36:22 -995
Gimple 07:21:22 -31.5 Dark Up 46.4 317.5 Up 07:06:22 - 07:36:22 -995
Quincy 07:21:23 -31.7 Dark Up 46.3 317.6 Up 07:06:23 - 07:36:23 -1013
Portola 07:21:20 -31.9 Dark Up 46.0 317.7 Up 07:06:20 - 07:36:20 -1025
Reno 07:21:19 -32.2 Dark Up 45.4 317.9 Up 07:06:19 - 07:36:19 -1049
Carson City 07:21:20 -32.6 Dark Up 45.2 318.2 Up 07:06:20 - 07:36:20 -1081
Yerington 07:21:18 -32.9 Dark Up 44.7 318.3 Up 07:06:18 - 07:36:18 -1097
Gardnerville 07:21:20 -32.9 Dark Up 45.0 318.3 Up 07:06:20 - 07:36:20 -1103
Hawthorne 07:21:17 -33.4 Dark Up 44.1 318.7 Up 07:06:17 - 07:36:17 -1138
Tonopah 07:21:13 -34.1 Dark Up 43.0 319.0 Up 07:06:13 - 07:36:13 -1174
Lee Vining 07:21:19 -33.9 Dark Up 43.9 319.0 Up 07:06:19 - 07:36:19 -1189
Bishop 07:21:17 -34.6 Dark Up 43.1 319.4 Up 07:06:17 - 07:36:17 -1240
Beatty 07:21:12 -35.3 Dark Up 41.9 319.8 Up 07:06:12 - 07:36:12 -1273
Indian Springs 07:21:10 -35.7 Dark Up 41.1 320.0 Up 07:06:10 - 07:36:10 -1295
Lone Pine 07:21:17 -35.4 Dark Up 42.3 319.9 Up 07:06:17 - 07:36:17 -1305
Henderson 07:21:07 -36.4 Dark Up 40.3 320.3 Up 07:06:07 - 07:36:07 -1335
Patrick 07:21:05 -37.1 Dark Up 39.3 320.7 Up 07:06:05 - 07:36:05 -1379
Searchlight/Boulder City 07:21:08 -36.9 Dark Up 39.8 320.6 Up 07:06:08 - 07:36:08 -1384
Kingman/Dolan Springs 07:21:06 -37.3 Dark Up 39.2 320.8 Up 07:06:06 - 07:36:06 -1400
Laughlin/Bullhead City 07:21:08 -37.3 Dark Up 39.4 320.8 Up 07:06:08 - 07:36:08 -1406
CPSLO 07:21:28 -36.2 Dark Up 42.6 320.6 Up 07:06:28 - 07:36:28 -1420
Mohave Valley 07:21:08 -37.5 Dark Up 39.2 321.0 Up 07:06:08 - 07:36:08 -1429
Lake Havasu City 07:21:08 -38.0 Dark Up 38.8 321.2 Up 07:06:08 - 07:36:08 -1460
Parker 07:21:07 -38.3 Dark Up 38.5 321.4 Up 07:06:07 - 07:36:07 -1489
Wildwood 07:21:22 -37.8 Dark Up 40.7 321.3 Up 07:06:22 - 07:36:22 -1520
Blythe 07:21:09 -38.8 Dark Up 38.2 321.6 Up 07:06:09 - 07:36:09 -1536
Idyllwild 07:21:16 -38.4 Dark Up 39.4 321.5 Up 07:06:16 - 07:36:16 -1541
Calipatria 07:21:13 -39.2 Dark Up 38.3 321.8 Up 07:06:13 - 07:36:13 -1584
Yuma 07:21:11 -39.7 Dark Up 37.5 322.0 Up 07:06:11 - 07:36:11 -1612

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 528219, (2023/08/04 07:23UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 32.92  80
23Bet Dra      17:30:25.9 +52:18:05  2.8 15.25  95
PPM 035197     15:55:49.4 +58:54:43  6.1  0.52 107
PPM 035181     15:53:38.1 +59:00:17  8.4  0.31 108
PPM 035163     15:51:08.0 +58:40:41 10.5  0.15 108
528219         15:51:55.1 +58:47:21 13.8       108
Positions are for J2000

Event circumstances last updated at 2019/07/05 22:22:09 UT

Marc W. Buie, Southwest Research Institute

RECON