RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1500:05976892 with event index number of 181414

Geocentric closest approach at 2019/02/15 09:35:44 UTC

J2000 position of star is 20:42:35.1 +60:16:05
Equinox of date position of star is 20:42:59.1 +60:20:06
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 22 seconds.
The 1-sigma cross-track error in the shadow position is 1077 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 09:36UT)
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 10.6 km RECON observability=0.3 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 09:33:22 -61.5 Dark Up 10.3 17.7 Really Low 09:31:05 - 09:35:40 5157
Quincy 09:33:31 -58.1 Dark Up 14.7 17.9 Really Low 09:31:13 - 09:35:48 5125
Fall River/Burney 09:33:33 -57.4 Dark Up 15.6 17.8 Really Low 09:31:15 - 09:35:50 5124
Greenville 09:33:30 -57.9 Dark Up 14.9 17.9 Really Low 09:31:13 - 09:35:48 5122
Gimple 09:33:30 -57.9 Dark Up 14.9 18.0 Really Low 09:31:12 - 09:35:47 5119
Klamath Falls 09:33:35 -56.6 Dark Up 16.7 17.7 Really Low 09:31:18 - 09:35:53 5117
Chiloquin 09:33:37 -56.3 Dark Up 17.0 17.7 Really Low 09:31:20 - 09:35:55 5114
Tulelake 09:33:34 -56.7 Dark Up 16.5 17.9 Really Low 09:31:17 - 09:35:52 5112
Portola 09:33:29 -58.0 Dark Up 14.7 18.1 Really Low 09:31:11 - 09:35:46 5110
Susanville 09:33:30 -57.6 Dark Up 15.2 18.1 Really Low 09:31:12 - 09:35:47 5108
Gardnerville 09:33:26 -58.3 Dark Up 14.0 18.4 Really Low 09:31:08 - 09:35:43 5094
Carson City 09:33:26 -58.1 Dark Up 14.2 18.4 Really Low 09:31:08 - 09:35:43 5093
Reno 09:33:27 -57.9 Dark Up 14.6 18.4 Really Low 09:31:09 - 09:35:44 5090
Wildwood 09:33:14 -61.2 Dark Up 9.7 18.5 Really Low 09:30:57 - 09:35:32 5082
La Pine/Gilchrist 09:33:37 -55.2 Dark Up 18.1 18.0 Really Low 09:31:19 - 09:35:54 5081
Lee Vining 09:33:22 -58.7 Dark Up 13.2 18.6 Really Low 09:31:05 - 09:35:40 5081
Cedarville 09:33:30 -56.5 Dark Up 16.4 18.4 Really Low 09:31:12 - 09:35:47 5075
Oregon Observatory 09:33:38 -55.0 Dark Up 18.3 18.1 Really Low 09:31:21 - 09:35:56 5075
Yerington 09:33:24 -58.0 Dark Up 14.2 18.6 Really Low 09:31:07 - 09:35:42 5072
Lakeview 09:33:33 -56.0 Dark Up 17.0 18.4 Really Low 09:31:15 - 09:35:50 5070
Sisters 09:33:39 -54.7 Dark Up 18.7 18.1 Really Low 09:31:22 - 09:35:57 5070
North Lake 09:33:36 -55.4 Dark Up 17.8 18.3 Really Low 09:31:18 - 09:35:53 5070
Paisley 09:33:33 -55.7 Dark Up 17.4 18.4 Really Low 09:31:15 - 09:35:50 5068
Bend 09:33:37 -54.8 Dark Up 18.5 18.1 Really Low 09:31:20 - 09:35:55 5067
Redmond 09:33:37 -54.6 Dark Up 18.7 18.2 Really Low 09:31:20 - 09:35:55 5058
Bishop 09:33:19 -58.8 Dark Up 12.8 18.8 Really Low 09:31:02 - 09:35:37 5058
Hawthorne 09:33:22 -58.1 Dark Up 13.9 18.8 Really Low 09:31:05 - 09:35:40 5057
Lone Pine 09:33:16 -59.2 Dark Up 12.2 18.9 Really Low 09:30:59 - 09:35:34 5050
Madras/Culver 09:33:38 -54.3 Dark Up 19.1 18.3 Really Low 09:31:20 - 09:35:55 5049
Maupin 09:33:39 -53.8 Dark Up 19.6 18.4 Really Low 09:31:21 - 09:35:56 5035
The Dalles 09:33:40 -53.5 Dark Up 20.0 18.4 Low 09:31:22 - 09:35:57 5029
Goldendale 09:33:39 -53.2 Dark Up 20.3 18.6 Low 09:31:21 - 09:35:56 5012
Tonopah 09:33:16 -57.7 Dark Up 13.8 19.4 Really Low 09:30:59 - 09:35:34 5006
Idyllwild 09:33:09 -60.3 Dark Up 9.9 19.3 Really Low 09:30:51 - 09:35:26 5004
Beatty 09:33:14 -58.2 Dark Up 12.8 19.5 Really Low 09:30:56 - 09:35:31 4996
Yakima 09:33:40 -52.4 Dark Up 21.1 18.8 Low 09:31:23 - 09:35:58 4986
Toppenish/White Swan 09:33:39 -52.5 Dark Up 20.9 18.8 Low 09:31:21 - 09:35:56 4986
Ellensburg 09:33:41 -52.1 Dark Up 21.5 18.9 Low 09:31:23 - 09:35:58 4975
George/Umatilla 09:33:37 -52.5 Dark Up 20.7 19.3 Low 09:31:19 - 09:35:54 4962
Wenatchee 09:33:41 -51.6 Dark Up 21.9 19.0 Low 09:31:24 - 09:35:59 4958
Indian Springs 09:33:10 -57.8 Dark Up 12.8 19.9 Really Low 09:30:53 - 09:35:28 4953
Calipatria 09:33:04 -59.9 Dark Up 9.6 19.7 Really Low 09:30:47 - 09:35:22 4953
Entiat 09:33:41 -51.4 Dark Up 22.2 19.1 Low 09:31:23 - 09:35:58 4948
Pasco 09:33:36 -52.2 Dark Up 21.1 19.4 Low 09:31:18 - 09:35:53 4947
PNWRO 09:33:35 -52.3 Dark Up 20.9 19.5 Low 09:31:17 - 09:35:52 4945
Manson/Chelan 09:33:42 -51.2 Dark Up 22.4 19.2 Low 09:31:24 - 09:35:59 4940
Henderson 09:33:07 -57.7 Dark Up 12.5 20.2 Really Low 09:30:50 - 09:35:25 4925
Searchlight/Boulder City 09:33:07 -58.1 Dark Up 12.0 20.2 Really Low 09:30:49 - 09:35:24 4924
Brewster 09:33:40 -50.9 Dark Up 22.7 19.4 Low 09:31:23 - 09:35:58 4923
Yuma 09:33:01 -59.6 Dark Up 9.5 20.1 Really Low 09:30:43 - 09:35:18 4912
Blythe 09:33:03 -59.0 Dark Up 10.3 20.2 Really Low 09:30:45 - 09:35:20 4911
Mohave Valley 09:33:04 -58.2 Dark Up 11.5 20.3 Really Low 09:30:47 - 09:35:22 4910
Laughlin/Bullhead City 09:33:05 -58.0 Dark Up 11.8 20.3 Really Low 09:30:47 - 09:35:22 4910
Okanogan 09:33:41 -50.6 Dark Up 23.0 19.5 Low 09:31:23 - 09:35:58 4909
Lake Havasu City 09:33:03 -58.3 Dark Up 11.2 20.3 Really Low 09:30:46 - 09:35:21 4899
Parker 09:33:03 -58.5 Dark Up 10.9 20.3 Really Low 09:30:45 - 09:35:20 4898
Tonasket 09:33:41 -50.2 Dark Up 23.3 19.6 Low 09:31:23 - 09:35:58 4895
Oroville 09:33:41 -50.0 Dark Up 23.5 19.7 Low 09:31:24 - 09:35:59 4889
Kingman/Dolan Springs 09:33:04 -57.7 Dark Up 12.0 20.5 Really Low 09:30:46 - 09:35:21 4887
Patrick 09:33:03 -57.4 Dark Up 12.2 20.6 Really Low 09:30:46 - 09:35:21 4878
Penticton 09:33:43 -49.6 Dark Up 24.1 19.7 Low 09:31:25 - 09:36:00 4875
DCO 09:33:01 -57.2 Dark Up 12.1 20.9 Really Low 09:30:43 - 09:35:18 4846
Niwot 09:32:50 -49.2 Dark Up 19.2 24.6 Really Low 09:30:33 - 09:35:08 4445

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 09:36UT)
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 2018/06/11 22:37:59 UT

Marc W. Buie, Southwest Research Institute

RECON