RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star UC4-726-063193 with event index number of 336775

Geocentric closest approach at 2019/12/17 13:06:46 UTC

J2000 position of star is 20:02:14.6 +55:10:35
Equinox of date position of star is 20:02:41.4 +55:13:47
Stellar brightness R=16.2, use SENSEUP=128
Star is 104 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 12.9 AU from the Sun and 12.9 AU from the Earth.
The TNO is moving 32.4 km/sec on the sky relative to the star, or, 12.4 arcsec/hr.
The 1-sigma error in the time of the event is 28 seconds.
The 1-sigma cross-track error in the shadow position is 1078 km.
The sky-plane scale is 9391.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.6 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2019/12/17 13:07UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:06.8 +45:21:09  1.3 11.69 116
PPM 038124     20:05:48.6 +56:23:59  6.5  1.25 103
PPM 038012     20:00:48.0 +55:14:53  8.4  0.27 104
PPM 038038     20:01:54.2 +55:06:30  9.8  0.17 104
342842         20:02:43.0 +55:13:58 16.2       104
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 6.1 km RECON observability=0.1 and success probability=0.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 13:03:54 -25.7 Dark Up 20.6 23.9 Low 13:01:03 - 13:06:46 -615
Penticton 13:03:54 -25.5 Dark Up 20.4 23.9 Low 13:01:03 - 13:06:46 -636
Kelowna 13:03:54 -25.5 Dark Up 20.7 24.1 Low 13:01:03 - 13:06:46 -637
The Dalles 13:03:49 -26.2 Dark Up 16.3 22.5 Really Low 13:00:58 - 13:06:41 -640
Okanagan Falls 13:03:54 -25.5 Dark Up 20.2 23.9 Low 13:01:02 - 13:06:45 -640
Ellensburg 13:03:51 -25.9 Dark Up 17.8 23.0 Really Low 13:00:59 - 13:06:42 -643
Manson/Chelan 13:03:52 -25.7 Dark Up 18.7 23.4 Really Low 13:01:00 - 13:06:43 -644
Entiat 13:03:51 -25.8 Dark Up 18.5 23.3 Really Low 13:01:00 - 13:06:43 -646
Oliver 13:03:54 -25.5 Dark Up 20.0 23.9 Low 13:01:02 - 13:06:45 -646
Wenatchee 13:03:51 -25.8 Dark Up 18.2 23.2 Really Low 13:01:00 - 13:06:43 -646
Sisters 13:03:48 -26.3 Dark Up 15.0 22.2 Really Low 13:00:56 - 13:06:39 -650
Yakima 13:03:50 -25.9 Dark Up 17.4 23.0 Really Low 13:00:59 - 13:06:42 -654
Goldendale 13:03:49 -25.9 Dark Up 16.6 22.7 Really Low 13:00:58 - 13:06:41 -659
Maupin 13:03:49 -26.0 Dark Up 15.9 22.5 Really Low 13:00:57 - 13:06:40 -660
Oroville 13:03:53 -25.4 Dark Up 19.8 23.9 Really Low 13:01:02 - 13:06:45 -661
Brewster 13:03:52 -25.5 Dark Up 19.0 23.6 Really Low 13:01:00 - 13:06:43 -663
Anarchist Mountain Observatory 13:03:53 -25.4 Dark Up 19.9 23.9 Really Low 13:01:02 - 13:06:45 -664
Okanogan 13:03:52 -25.4 Dark Up 19.3 23.7 Really Low 13:01:01 - 13:06:44 -668
Tonasket 13:03:53 -25.4 Dark Up 19.6 23.9 Really Low 13:01:01 - 13:06:44 -669
Oregon Observatory 13:03:47 -26.1 Dark Up 14.7 22.2 Really Low 13:00:56 - 13:06:39 -672
Toppenish/White Swan 13:03:50 -25.7 Dark Up 17.2 23.0 Really Low 13:00:58 - 13:06:41 -672
Madras/Culver 13:03:48 -26.0 Dark Up 15.4 22.5 Really Low 13:00:56 - 13:06:39 -673
La Pine/Gilchrist 13:03:47 -26.1 Dark Up 14.4 22.2 Really Low 13:00:55 - 13:06:38 -674
Bend 13:03:47 -26.1 Dark Up 14.8 22.3 Really Low 13:00:56 - 13:06:39 -676
Redmond 13:03:47 -26.0 Dark Up 15.1 22.4 Really Low 13:00:56 - 13:06:39 -680
Chiloquin 13:03:46 -26.2 Dark Up 13.3 21.9 Really Low 13:00:55 - 13:06:38 -681
Klamath Falls 13:03:46 -26.1 Dark Up 13.0 21.9 Really Low 13:00:54 - 13:06:37 -698
Tulelake 13:03:45 -25.9 Dark Up 12.9 22.0 Really Low 13:00:53 - 13:06:36 -729
North Lake 13:03:46 -25.6 Dark Up 14.2 22.4 Really Low 13:00:55 - 13:06:38 -731
George/Umatilla 13:03:49 -24.9 Dark Up 17.1 23.5 Really Low 13:00:57 - 13:06:40 -759
Fall River/Burney 13:03:44 -25.7 Dark Up 12.0 22.0 Really Low 13:00:52 - 13:06:35 -763
Pasco 13:03:49 -24.8 Dark Up 17.5 23.7 Really Low 13:00:58 - 13:06:41 -764
Paisley 13:03:45 -25.3 Dark Up 13.8 22.6 Really Low 13:00:54 - 13:06:37 -775
PNWRO 13:03:49 -24.6 Dark Up 17.3 23.8 Really Low 13:00:57 - 13:06:40 -788
Lakeview 13:03:45 -25.1 Dark Up 13.4 22.6 Really Low 13:00:53 - 13:06:36 -806
Greenville 13:03:43 -25.2 Dark Up 11.3 22.1 Really Low 13:00:51 - 13:06:34 -827
Gimple 13:03:43 -25.1 Dark Up 11.3 22.2 Really Low 13:00:51 - 13:06:34 -833
Quincy 13:03:43 -25.1 Dark Up 11.1 22.1 Really Low 13:00:51 - 13:06:34 -834
Cedarville 13:03:44 -24.8 Dark Up 12.8 22.6 Really Low 13:00:52 - 13:06:35 -840
Susanville 13:03:43 -25.0 Dark Up 11.7 22.3 Really Low 13:00:52 - 13:06:35 -840
Portola 13:03:42 -24.8 Dark Up 11.1 22.3 Really Low 13:00:51 - 13:06:34 -875
Reno 13:03:42 -24.2 Dark Up 11.1 22.6 Really Low 13:00:50 - 13:06:33 -934
Carson City 13:03:41 -24.1 Dark Up 10.8 22.6 Really Low 13:00:50 - 13:06:33 -948
Gardnerville 13:03:41 -24.0 Dark Up 10.6 22.6 Really Low 13:00:49 - 13:06:32 -961
Yerington 13:03:41 -23.6 Dark Up 10.8 22.9 Really Low 13:00:49 - 13:06:32 -1005
CPSLO 13:03:38 -24.0 Dark Up 6.9 22.0 Really Low 13:00:47 - 13:06:30 -1016
Lee Vining 13:03:40 -23.4 Dark Up 9.8 22.9 Really Low 13:00:48 - 13:06:31 -1045
Hawthorne 13:03:40 -23.1 Dark Up 10.5 23.1 Really Low 13:00:48 - 13:06:31 -1063
Bishop 13:03:39 -22.7 Dark Up 9.5 23.2 Really Low 13:00:47 - 13:06:30 -1125
Lone Pine 13:03:38 -22.3 Dark Up 8.9 23.3 Really Low 13:00:46 - 13:06:29 -1180
Tonopah 13:03:39 -21.9 Dark Up 10.5 23.8 Really Low 13:00:47 - 13:06:30 -1192
Wildwood 13:03:36 -22.1 Dark Up 6.4 22.9 Really Low 13:00:45 - 13:06:28 -1232
Beatty 13:03:38 -21.3 Dark Up 9.6 23.9 Really Low 13:00:46 - 13:06:29 -1274
Indian Springs 13:03:37 -20.4 Dark Up 9.7 24.4 Really Low 13:00:45 - 13:06:28 -1374
Idyllwild 13:03:35 -20.5 Dark Up 6.7 23.8 Really Low 13:00:44 - 13:06:27 -1404
Henderson 13:03:36 -19.7 Dark Up 9.4 24.7 Really Low 13:00:44 - 13:06:27 -1452
Searchlight/Boulder City 13:03:36 -19.5 Dark Up 8.9 24.7 Really Low 13:00:44 - 13:06:27 -1481
Laughlin/Bullhead City 13:03:35 -19.2 Dark Up 8.8 24.8 Really Low 13:00:44 - 13:06:27 -1522
Calipatria 13:03:34 -19.4 Dark Up 6.6 24.3 Really Low 13:00:43 - 13:06:26 -1529
Mohave Valley 13:03:35 -19.1 Dark Up 8.5 24.8 Really Low 13:00:44 - 13:06:27 -1534
Kingman/Dolan Springs 13:03:35 -18.8 Dark Up 9.0 25.1 Really Low 13:00:44 - 13:06:27 -1563
Patrick 13:03:35 -18.7 Dark Up 9.2 25.2 Really Low 13:00:44 - 13:06:27 -1569
Lake Havasu City 13:03:35 -18.8 Dark Up 8.2 24.9 Really Low 13:00:43 - 13:06:26 -1571
Blythe 13:03:34 -18.8 Dark Up 7.3 24.7 Really Low 13:00:42 - 13:06:25 -1586
Parker 13:03:34 -18.7 Dark Up 7.9 24.9 Really Low 13:00:43 - 13:06:26 -1589
Yuma 13:03:33 -18.5 Dark Up 6.5 24.7 Really Low 13:00:42 - 13:06:25 -1623
DCO 13:03:35 -18.0 Dark Up 9.2 25.5 Really Low 13:00:43 - 13:06:26 -1641
Niwot 13:03:38 -13.5 AT Up 16.6 29.6 Really Low 13:00:47 - 13:06:30 -2035

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, (2019/12/17 13:07UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 11.69 116
PPM 038124     20:05:21.5 +56:20:31  6.5  1.25 103
PPM 038012     20:00:19.8 +55:11:32  8.4  0.27 104
PPM 038038     20:01:25.7 +55:03:07  9.8  0.17 104
342842         20:02:14.6 +55:10:35 16.2       104
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:41:00 UT

Marc W. Buie, Southwest Research Institute

RECON