RECON: TNO occultation with 8405

Event between (8405) Asbolus and star GA1300:02664517 with event index number of 225344

Geocentric closest approach at 2019/11/13 07:46:27 UTC

J2000 position of star is 05:20:15.2 +40:51:48
Equinox of date position of star is 05:21:32.8 +40:52:51
Stellar brightness G=15.7, use SENSEUP=128
Star is 31 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 22.5 AU from the Sun and 21.7 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 1066 km.
The sky-plane scale is 15761.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 4.1 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 8405, (2019/11/13 07:46UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.8 +16:32:52  0.8 26.17  11
34Bet Aur      06:00:59.2 +44:56:50  1.9  8.26  39
PPM 047999     05:21:38.5 +41:06:16  5.5  0.22  31
PPM 048017     05:22:18.4 +40:54:12  7.3  0.13  31
8405           05:21:38.9 +40:52:56 15.7        31
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 5.0 sigma about the mid-time.
The median site spacing is 26.4 km RECON observability=1.0 and success probability=39.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:48:11 -58.4 Dark Up 67.1 100.6 Up 07:35:38 - 08:00:45 -25
Oroville 07:48:12 -58.9 Dark Up 67.2 99.3 Up 07:35:38 - 08:00:45 -91
Tonasket 07:48:12 -59.2 Dark Up 67.3 98.8 Up 07:35:38 - 08:00:45 -116
Okanogan 07:48:12 -59.5 Dark Up 67.2 97.8 Up 07:35:39 - 08:00:46 -150
Brewster 07:48:13 -59.8 Dark Up 67.1 97.0 Up 07:35:40 - 08:00:47 -177
Manson/Chelan 07:48:15 -60.0 Dark Up 66.9 96.2 Up 07:35:41 - 08:00:48 -194
Entiat 07:48:15 -60.2 Dark Up 66.9 95.6 Up 07:35:42 - 08:00:49 -217
Wenatchee 07:48:16 -60.5 Dark Up 66.9 94.9 Up 07:35:43 - 08:00:50 -243
Ellensburg 07:48:17 -60.9 Dark Up 66.7 93.8 Up 07:35:43 - 08:00:50 -284
Yakima 07:48:18 -61.3 Dark Up 66.8 92.8 Up 07:35:44 - 08:00:51 -328
Toppenish/White Swan 07:48:17 -61.5 Dark Up 66.9 92.4 Up 07:35:44 - 08:00:51 -354
Pasco 07:48:13 -61.6 Dark Up 67.8 93.1 Up 07:35:40 - 08:00:47 -386
Goldendale 07:48:19 -62.1 Dark Up 66.6 90.8 Up 07:35:46 - 08:00:53 -407
PNWRO 07:48:13 -61.8 Dark Up 67.9 92.7 Up 07:35:39 - 08:00:46 -416
George/Umatilla 07:48:15 -62.0 Dark Up 67.6 92.2 Up 07:35:41 - 08:00:48 -419
The Dalles 07:48:21 -62.3 Dark Up 66.4 90.0 Up 07:35:47 - 08:00:54 -425
Maupin 07:48:21 -62.7 Dark Up 66.4 89.2 Up 07:35:47 - 08:00:54 -472
Madras/Culver 07:48:22 -63.3 Dark Up 66.4 87.9 Up 07:35:48 - 08:00:55 -531
Sisters 07:48:23 -63.6 Dark Up 66.1 86.8 Up 07:35:50 - 08:00:57 -560
Redmond 07:48:22 -63.6 Dark Up 66.3 87.0 Up 07:35:49 - 08:00:56 -569
Bend 07:48:23 -63.8 Dark Up 66.2 86.5 Up 07:35:49 - 08:00:56 -590
Oregon Observatory 07:48:23 -64.0 Dark Up 66.1 86.0 Up 07:35:50 - 08:00:57 -606
La Pine/Gilchrist 07:48:24 -64.2 Dark Up 66.1 85.5 Up 07:35:50 - 08:00:57 -627
North Lake 07:48:22 -64.7 Dark Up 66.5 84.8 Up 07:35:49 - 08:00:56 -685
Chiloquin 07:48:26 -65.3 Dark Up 65.7 82.9 Up 07:35:53 - 08:01:00 -742
Paisley 07:48:22 -65.2 Dark Up 66.7 83.8 Up 07:35:48 - 08:00:55 -751
Klamath Falls 07:48:26 -65.7 Dark Up 65.7 82.1 Up 07:35:53 - 08:01:00 -780
Lakeview 07:48:22 -65.7 Dark Up 66.8 82.7 Up 07:35:48 - 08:00:55 -809
Tulelake 07:48:26 -65.9 Dark Up 65.9 81.7 Up 07:35:52 - 08:00:59 -815
Cedarville 07:48:22 -66.4 Dark Up 66.8 81.2 Up 07:35:48 - 08:00:55 -884
Fall River/Burney 07:48:26 -66.9 Dark Up 65.8 79.7 Up 07:35:53 - 08:01:00 -915
Susanville 07:48:24 -67.5 Dark Up 66.2 78.6 Up 07:35:51 - 08:00:58 -997
Greenville 07:48:25 -67.8 Dark Up 66.0 77.9 Up 07:35:52 - 08:00:59 -1021
Gimple 07:48:25 -67.8 Dark Up 66.0 77.9 Up 07:35:52 - 08:00:59 -1023
Quincy 07:48:26 -68.0 Dark Up 65.9 77.4 Up 07:35:52 - 08:00:59 -1043
Portola 07:48:24 -68.1 Dark Up 66.3 77.3 Up 07:35:51 - 08:00:58 -1065
Reno 07:48:22 -68.3 Dark Up 66.7 76.8 Up 07:35:49 - 08:00:56 -1105
Carson City 07:48:22 -68.7 Dark Up 66.6 76.0 Up 07:35:49 - 08:00:56 -1145
Gardnerville 07:48:23 -68.9 Dark Up 66.6 75.5 Up 07:35:49 - 08:00:56 -1172
Yerington 07:48:20 -68.9 Dark Up 67.0 75.7 Up 07:35:47 - 08:00:54 -1177
Niwot 07:47:29 -64.0 Dark Up 77.7 81.2 Up 07:34:55 - 08:00:02 -1186
Hawthorne 07:48:19 -69.3 Dark Up 67.3 74.7 Up 07:35:45 - 08:00:52 -1236
Lee Vining 07:48:21 -69.9 Dark Up 66.8 73.4 Up 07:35:47 - 08:00:54 -1290
Tonopah 07:48:14 -69.6 Dark Up 68.2 73.7 Up 07:35:41 - 08:00:48 -1308
Bishop 07:48:19 -70.4 Dark Up 67.2 72.1 Up 07:35:45 - 08:00:52 -1366
Beatty 07:48:13 -70.6 Dark Up 68.2 71.0 Up 07:35:40 - 08:00:47 -1442
Lone Pine 07:48:18 -71.1 Dark Up 67.2 70.4 Up 07:35:45 - 08:00:52 -1455
Indian Springs 07:48:09 -70.8 Dark Up 68.9 70.1 Up 07:35:36 - 08:00:43 -1492
CPSLO 07:48:28 -72.6 Dark Up 64.8 67.8 Up 07:35:55 - 08:01:02 -1551
Henderson 07:48:07 -71.1 Dark Up 69.3 68.7 Up 07:35:34 - 08:00:41 -1560
Searchlight/Boulder City 07:48:07 -71.6 Dark Up 69.1 67.3 Up 07:35:34 - 08:00:41 -1623
Patrick 07:48:03 -71.4 Dark Up 69.8 66.9 Up 07:35:30 - 08:00:37 -1642
Laughlin/Bullhead City 07:48:06 -71.8 Dark Up 69.2 66.5 Up 07:35:32 - 08:00:39 -1660
Kingman/Dolan Springs 07:48:04 -71.7 Dark Up 69.6 66.4 Up 07:35:31 - 08:00:38 -1664
DCO 07:48:01 -71.5 Dark Up 70.2 65.9 Up 07:35:27 - 08:00:34 -1684
Mohave Valley 07:48:06 -72.1 Dark Up 69.1 65.8 Up 07:35:33 - 08:00:40 -1690
Wildwood 07:48:22 -73.7 Dark Up 65.8 65.1 Up 07:35:48 - 08:00:55 -1719
Lake Havasu City 07:48:05 -72.4 Dark Up 69.1 64.8 Up 07:35:32 - 08:00:39 -1737
Parker 07:48:05 -72.7 Dark Up 69.0 63.9 Up 07:35:32 - 08:00:39 -1776
Idyllwild 07:48:15 -73.7 Dark Up 67.1 63.9 Up 07:35:41 - 08:00:48 -1787
Blythe 07:48:07 -73.3 Dark Up 68.6 62.8 Up 07:35:33 - 08:00:40 -1829
Calipatria 07:48:11 -74.0 Dark Up 67.6 62.1 Up 07:35:37 - 08:00:44 -1870
Yuma 07:48:07 -74.1 Dark Up 68.1 60.8 Up 07:35:34 - 08:00:41 -1929

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, (2019/11/13 07:46UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 26.17  11
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.26  39
PPM 047999     05:20:14.6 +41:05:09  5.5  0.22  31
PPM 048017     05:20:54.7 +40:53:05  7.3  0.13  31
8405           05:20:15.2 +40:51:48 15.7        31
Positions are for J2000

Event circumstances last updated at 2018/06/05 18:20:11 UT

Marc W. Buie, Southwest Research Institute

RECON