RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1500:05976892 with event index number of 336591

Geocentric closest approach at 2019/02/15 09:34:53 UTC

J2000 position of star is 20:42:35.1 +60:16:05
Equinox of date position of star is 20:43:00.0 +60:20:14
Stellar brightness G=15.9, use SENSEUP=128
Star is 92 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 12.3 AU from the Sun and 12.5 AU from the Earth.
The TNO is moving 26.0 km/sec on the sky relative to the star, or, 10.3 arcsec/hr.
The 1-sigma error in the time of the event is 23 seconds.
The 1-sigma cross-track error in the shadow position is 1305 km.
The sky-plane scale is 9067.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.2 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2019/02/15 09:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:05.1 +45:20:58  1.3 14.99 103
Alderamin      21:19:02.1 +62:40:01  2.4  4.88  87
PPM 022340     20:43:03.9 +60:40:13  6.1  0.33  91
PPM 022361     20:44:50.2 +60:25:38  8.7  0.24  91
342842         20:43:00.0 +60:20:15 15.9        91
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 6.5 km RECON observability=0.3 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 09:33:23 -61.5 Dark Up 10.3 17.7 Really Low 09:30:56 - 09:35:50 5208
Quincy 09:33:30 -58.1 Dark Up 14.7 17.9 Really Low 09:31:03 - 09:35:57 5176
Fall River/Burney 09:33:34 -57.4 Dark Up 15.6 17.8 Really Low 09:31:07 - 09:36:01 5175
Greenville 09:33:31 -57.9 Dark Up 14.9 17.9 Really Low 09:31:04 - 09:35:58 5173
Gimple 09:33:30 -57.9 Dark Up 14.9 18.0 Really Low 09:31:03 - 09:35:57 5170
Klamath Falls 09:33:36 -56.6 Dark Up 16.7 17.7 Really Low 09:31:09 - 09:36:03 5168
Chiloquin 09:33:38 -56.3 Dark Up 17.0 17.7 Really Low 09:31:11 - 09:36:05 5165
Tulelake 09:33:36 -56.7 Dark Up 16.5 17.9 Really Low 09:31:09 - 09:36:03 5163
Portola 09:33:29 -58.0 Dark Up 14.7 18.1 Really Low 09:31:02 - 09:35:56 5161
Susanville 09:33:30 -57.6 Dark Up 15.2 18.1 Really Low 09:31:03 - 09:35:57 5159
Gardnerville 09:33:26 -58.3 Dark Up 14.0 18.4 Really Low 09:30:59 - 09:35:53 5145
Carson City 09:33:26 -58.1 Dark Up 14.2 18.4 Really Low 09:30:59 - 09:35:53 5144
Reno 09:33:26 -57.9 Dark Up 14.6 18.4 Really Low 09:30:59 - 09:35:53 5141
Wildwood 09:33:15 -61.2 Dark Up 9.7 18.5 Really Low 09:30:48 - 09:35:42 5133
La Pine/Gilchrist 09:33:38 -55.2 Dark Up 18.1 18.0 Really Low 09:31:11 - 09:36:05 5132
Lee Vining 09:33:22 -58.7 Dark Up 13.2 18.6 Really Low 09:30:55 - 09:35:49 5132
Cedarville 09:33:31 -56.5 Dark Up 16.4 18.4 Really Low 09:31:04 - 09:35:58 5126
Oregon Observatory 09:33:38 -55.0 Dark Up 18.3 18.1 Really Low 09:31:11 - 09:36:05 5126
Yerington 09:33:24 -58.0 Dark Up 14.2 18.6 Really Low 09:30:57 - 09:35:51 5123
Sisters 09:33:40 -54.7 Dark Up 18.7 18.1 Really Low 09:31:13 - 09:36:07 5121
Lakeview 09:33:33 -56.0 Dark Up 17.0 18.4 Really Low 09:31:06 - 09:36:00 5121
North Lake 09:33:36 -55.4 Dark Up 17.8 18.3 Really Low 09:31:09 - 09:36:03 5121
Paisley 09:33:35 -55.7 Dark Up 17.4 18.4 Really Low 09:31:08 - 09:36:02 5119
Bend 09:33:38 -54.8 Dark Up 18.5 18.1 Really Low 09:31:11 - 09:36:05 5118
Redmond 09:33:39 -54.6 Dark Up 18.8 18.2 Really Low 09:31:12 - 09:36:06 5109
Bishop 09:33:20 -58.8 Dark Up 12.8 18.8 Really Low 09:30:53 - 09:35:47 5109
Hawthorne 09:33:21 -58.1 Dark Up 13.9 18.8 Really Low 09:30:54 - 09:35:48 5108
Lone Pine 09:33:17 -59.2 Dark Up 12.2 18.9 Really Low 09:30:50 - 09:35:44 5101
Madras/Culver 09:33:39 -54.3 Dark Up 19.1 18.3 Really Low 09:31:12 - 09:36:06 5100
Maupin 09:33:39 -53.8 Dark Up 19.6 18.4 Really Low 09:31:12 - 09:36:06 5086
The Dalles 09:33:40 -53.5 Dark Up 20.0 18.4 Low 09:31:13 - 09:36:07 5080
Goldendale 09:33:39 -53.2 Dark Up 20.3 18.6 Low 09:31:12 - 09:36:06 5063
Tonopah 09:33:17 -57.7 Dark Up 13.8 19.4 Really Low 09:30:50 - 09:35:44 5057
Idyllwild 09:33:09 -60.3 Dark Up 9.9 19.3 Really Low 09:30:42 - 09:35:36 5055
Beatty 09:33:14 -58.2 Dark Up 12.8 19.5 Really Low 09:30:47 - 09:35:41 5047
Yakima 09:33:41 -52.4 Dark Up 21.1 18.8 Low 09:31:14 - 09:36:08 5037
Toppenish/White Swan 09:33:40 -52.5 Dark Up 20.9 18.8 Low 09:31:13 - 09:36:07 5037
Ellensburg 09:33:42 -52.1 Dark Up 21.5 18.9 Low 09:31:15 - 09:36:09 5026
George/Umatilla 09:33:36 -52.5 Dark Up 20.7 19.3 Low 09:31:09 - 09:36:03 5013
Wenatchee 09:33:42 -51.6 Dark Up 21.9 19.0 Low 09:31:15 - 09:36:09 5009
Indian Springs 09:33:11 -57.8 Dark Up 12.8 19.9 Really Low 09:30:44 - 09:35:38 5004
Calipatria 09:33:05 -59.9 Dark Up 9.6 19.8 Really Low 09:30:38 - 09:35:32 5004
Entiat 09:33:41 -51.4 Dark Up 22.2 19.1 Low 09:31:14 - 09:36:08 4999
Pasco 09:33:37 -52.2 Dark Up 21.1 19.4 Low 09:31:10 - 09:36:04 4998
PNWRO 09:33:35 -52.3 Dark Up 20.9 19.5 Low 09:31:08 - 09:36:02 4996
Manson/Chelan 09:33:42 -51.2 Dark Up 22.4 19.2 Low 09:31:15 - 09:36:09 4991
Henderson 09:33:08 -57.7 Dark Up 12.5 20.2 Really Low 09:30:41 - 09:35:35 4976
Searchlight/Boulder City 09:33:07 -58.1 Dark Up 12.0 20.2 Really Low 09:30:40 - 09:35:34 4975
Brewster 09:33:41 -50.9 Dark Up 22.7 19.4 Low 09:31:14 - 09:36:08 4974
Yuma 09:33:02 -59.6 Dark Up 9.5 20.1 Really Low 09:30:35 - 09:35:29 4963
Blythe 09:33:03 -59.0 Dark Up 10.3 20.2 Really Low 09:30:36 - 09:35:30 4962
Mohave Valley 09:33:05 -58.2 Dark Up 11.5 20.3 Really Low 09:30:38 - 09:35:32 4961
Laughlin/Bullhead City 09:33:06 -58.0 Dark Up 11.8 20.3 Really Low 09:30:39 - 09:35:33 4961
Okanogan 09:33:41 -50.6 Dark Up 23.0 19.5 Low 09:31:14 - 09:36:08 4960
Lake Havasu City 09:33:04 -58.3 Dark Up 11.2 20.3 Really Low 09:30:37 - 09:35:31 4950
Parker 09:33:03 -58.5 Dark Up 10.9 20.3 Really Low 09:30:36 - 09:35:30 4949
Tonasket 09:33:41 -50.2 Dark Up 23.3 19.6 Low 09:31:14 - 09:36:08 4946
Oroville 09:33:42 -50.0 Dark Up 23.5 19.7 Low 09:31:15 - 09:36:09 4940
Kingman/Dolan Springs 09:33:04 -57.7 Dark Up 12.0 20.5 Really Low 09:30:37 - 09:35:31 4938
Oliver 09:33:42 -49.9 Dark Up 23.8 19.6 Low 09:31:15 - 09:36:09 4937
Anarchist Mountain Observatory 09:33:42 -49.9 Dark Up 23.6 19.7 Low 09:31:15 - 09:36:09 4935
Okanagan Falls 09:33:43 -49.7 Dark Up 23.9 19.7 Low 09:31:16 - 09:36:10 4933
Patrick 09:33:04 -57.4 Dark Up 12.2 20.6 Really Low 09:30:37 - 09:35:31 4929
Penticton 09:33:44 -49.6 Dark Up 24.1 19.7 Low 09:31:17 - 09:36:11 4927
Summerland 09:33:45 -49.3 Dark Up 24.3 19.6 Low 09:31:18 - 09:36:12 4923
Kelowna 09:33:44 -49.2 Dark Up 24.5 19.8 Low 09:31:17 - 09:36:11 4911
DCO 09:33:01 -57.2 Dark Up 12.1 20.9 Really Low 09:30:34 - 09:35:28 4897
SwRI 09:32:51 -49.3 Dark Up 19.1 24.6 Really Low 09:30:24 - 09:35:18 4502
Niwot 09:32:51 -49.2 Dark Up 19.2 24.6 Really Low 09:30:24 - 09:35:18 4496

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 342842, (2019/02/15 09:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 14.99 103
Alderamin      21:18:35.2 +62:35:09  2.4  4.88  87
PPM 022340     20:42:39.5 +60:36:03  6.1  0.33  91
PPM 022361     20:44:25.3 +60:21:26  8.7  0.24  91
342842         20:42:35.1 +60:16:05 15.9        92
Positions are for J2000

Event circumstances last updated at 2019/02/12 06:09:36 UT

Marc W. Buie, Southwest Research Institute

RECON