RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star UC4-342-073511 with event index number of 148114

Geocentric closest approach at 2018/04/29 06:38:47 UTC

J2000 position of star is 15:25:35.9 -21:41:47
Equinox of date position of star is 15:26:36.6 -21:45:24
Stellar brightness R=16.5, use SENSEUP=128
Star is 26 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 19.4 AU from the Sun and 18.4 AU from the Earth.
The TNO is moving 21.1 km/sec on the sky relative to the star, or, 5.7 arcsec/hr.
The 1-sigma error in the time of the event is 61 seconds.
The 1-sigma cross-track error in the shadow position is 865 km.
The sky-plane scale is 13345.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 7.5 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2018/04/29 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.0 -26:28:16  0.9 15.30  41
7Del Sco       16:01:25.2 -22:40:21  2.3  8.09  34
PPM 264334     15:31:40.0 -20:47:25  6.5  1.52  27
PPM 264222     15:26:26.6 -21:59:35  7.6  0.24  26
469442         15:26:39.9 -21:45:36 16.5        26
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 7.3 km RECON observability=0.5 and success probability=18.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:41:24 -24.5 Dark Up 13.4 148.4 Really Low 06:35:49 - 06:47:00 1407
Tonasket 06:41:25 -24.7 Dark Up 13.6 148.3 Really Low 06:35:49 - 06:47:00 1396
Okanogan 06:41:26 -25.0 Dark Up 13.8 148.2 Really Low 06:35:50 - 06:47:01 1375
Brewster 06:41:27 -25.2 Dark Up 14.0 148.0 Really Low 06:35:52 - 06:47:03 1356
Manson/Chelan 06:41:28 -25.4 Dark Up 14.0 147.6 Really Low 06:35:53 - 06:47:04 1336
Entiat 06:41:29 -25.5 Dark Up 14.2 147.5 Really Low 06:35:54 - 06:47:05 1322
Wenatchee 06:41:30 -25.8 Dark Up 14.4 147.4 Really Low 06:35:54 - 06:47:05 1306
Niwot 06:40:50 -35.3 Dark Up 25.7 160.2 Low 06:35:15 - 06:46:26 1303
Ellensburg 06:41:31 -26.1 Dark Up 14.6 147.2 Really Low 06:35:55 - 06:47:06 1279
Pasco 06:41:28 -27.1 Dark Up 15.8 148.3 Really Low 06:35:53 - 06:47:04 1277
PNWRO 06:41:28 -27.4 Dark Up 16.1 148.5 Really Low 06:35:52 - 06:47:03 1270
Yakima 06:41:32 -26.5 Dark Up 15.0 147.1 Really Low 06:35:56 - 06:47:07 1257
George/Umatilla 06:41:29 -27.4 Dark Up 16.0 148.1 Really Low 06:35:54 - 06:47:05 1253
Toppenish/White Swan 06:41:32 -26.7 Dark Up 15.2 147.2 Really Low 06:35:56 - 06:47:07 1249
Goldendale 06:41:34 -27.1 Dark Up 15.5 146.8 Really Low 06:35:59 - 06:47:10 1208
The Dalles 06:41:35 -27.2 Dark Up 15.6 146.4 Really Low 06:36:00 - 06:47:11 1185
Maupin 06:41:36 -27.7 Dark Up 16.0 146.4 Really Low 06:36:00 - 06:47:11 1165
Madras/Culver 06:41:37 -28.2 Dark Up 16.4 146.3 Really Low 06:36:01 - 06:47:12 1133
Redmond 06:41:38 -28.5 Dark Up 16.7 146.2 Really Low 06:36:02 - 06:47:13 1111
Sisters 06:41:38 -28.3 Dark Up 16.5 145.9 Really Low 06:36:03 - 06:47:14 1101
Bend 06:41:38 -28.6 Dark Up 16.8 146.1 Really Low 06:36:03 - 06:47:14 1095
Oregon Observatory 06:41:39 -28.8 Dark Up 16.9 145.9 Really Low 06:36:03 - 06:47:14 1081
La Pine/Gilchrist 06:41:39 -28.9 Dark Up 17.0 145.8 Really Low 06:36:04 - 06:47:15 1068
North Lake 06:41:38 -29.5 Dark Up 17.6 146.3 Really Low 06:36:03 - 06:47:14 1060
Paisley 06:41:38 -30.1 Dark Up 18.2 146.5 Really Low 06:36:03 - 06:47:14 1037
Lakeview 06:41:38 -30.6 Dark Up 18.8 146.6 Really Low 06:36:03 - 06:47:14 1013
Chiloquin 06:41:42 -29.9 Dark Up 17.8 145.3 Really Low 06:36:07 - 06:47:18 991
Cedarville 06:41:39 -31.3 Dark Up 19.4 146.6 Really Low 06:36:03 - 06:47:14 978
Klamath Falls 06:41:43 -30.2 Dark Up 18.1 145.3 Really Low 06:36:07 - 06:47:18 973
Tulelake 06:41:42 -30.5 Dark Up 18.5 145.5 Really Low 06:36:06 - 06:47:17 965
Fall River/Burney 06:41:43 -31.4 Dark Up 19.3 145.4 Really Low 06:36:08 - 06:47:19 912
Susanville 06:41:42 -32.2 Dark Up 20.1 146.0 Low 06:36:06 - 06:47:17 895
Gimple 06:41:43 -32.4 Dark Up 20.2 145.7 Low 06:36:07 - 06:47:18 870
Greenville 06:41:43 -32.4 Dark Up 20.2 145.7 Low 06:36:08 - 06:47:19 868
Reno 06:41:41 -33.2 Dark Up 21.2 146.5 Low 06:36:05 - 06:47:16 865
Portola 06:41:42 -32.8 Dark Up 20.7 146.0 Low 06:36:06 - 06:47:17 862
Quincy 06:41:43 -32.5 Dark Up 20.4 145.6 Low 06:36:08 - 06:47:19 855
Yerington 06:41:39 -33.9 Dark Up 21.9 147.0 Low 06:36:03 - 06:47:14 849
Tonopah 06:41:34 -35.3 Dark Up 23.5 148.5 Low 06:35:58 - 06:47:09 848
Carson City 06:41:41 -33.6 Dark Up 21.5 146.5 Low 06:36:05 - 06:47:16 842
Hawthorne 06:41:38 -34.5 Dark Up 22.5 147.3 Low 06:36:03 - 06:47:14 835
Gardnerville 06:41:41 -33.8 Dark Up 21.7 146.4 Low 06:36:06 - 06:47:17 828
Indian Springs 06:41:30 -37.1 Dark Up 25.4 149.5 Low 06:35:55 - 06:47:06 796
Beatty 06:41:34 -36.5 Dark Up 24.7 148.6 Low 06:35:58 - 06:47:09 785
Lee Vining 06:41:40 -34.9 Dark Up 22.8 146.8 Low 06:36:05 - 06:47:16 784
Henderson 06:41:28 -37.8 Dark Up 26.1 150.1 Low 06:35:52 - 06:47:03 781
DCO 06:41:22 -39.1 Dark Up 27.7 151.5 Low 06:35:47 - 06:46:58 773
Patrick 06:41:24 -38.7 Dark Up 27.1 150.9 Low 06:35:49 - 06:47:00 773
Bishop 06:41:38 -35.7 Dark Up 23.6 147.3 Low 06:36:03 - 06:47:14 766
Kingman/Dolan Springs 06:41:26 -38.8 Dark Up 27.3 150.7 Low 06:35:50 - 06:47:01 752
Searchlight/Boulder City 06:41:28 -38.4 Dark Up 26.7 150.0 Low 06:35:53 - 06:47:04 745
Laughlin/Bullhead City 06:41:27 -38.7 Dark Up 27.1 150.2 Low 06:35:52 - 06:47:03 734
Lone Pine 06:41:38 -36.5 Dark Up 24.4 147.4 Low 06:36:03 - 06:47:14 725
Mohave Valley 06:41:27 -39.0 Dark Up 27.3 150.2 Low 06:35:52 - 06:47:03 716
Lake Havasu City 06:41:27 -39.4 Dark Up 27.8 150.3 Low 06:35:52 - 06:47:03 696
Parker 06:41:27 -39.8 Dark Up 28.1 150.2 Low 06:35:52 - 06:47:03 673
Blythe 06:41:29 -40.2 Dark Up 28.4 149.8 Low 06:35:53 - 06:47:04 627
Idyllwild 06:41:36 -39.5 Dark Up 27.4 147.9 Low 06:36:01 - 06:47:12 570
Calipatria 06:41:33 -40.4 Dark Up 28.4 148.8 Low 06:35:57 - 06:47:08 563
Yuma 06:41:30 -41.1 Dark Up 29.2 149.5 Low 06:35:54 - 06:47:05 560
CPSLO 06:41:49 -36.9 Dark Up 24.3 144.8 Low 06:36:13 - 06:47:24 554
Wildwood 06:41:43 -38.7 Dark Up 26.3 146.3 Low 06:36:07 - 06:47:18 535

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 469442, (2018/04/29 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.30  41
7Del Sco       16:00:20.0 -22:37:18  2.3  8.09  34
PPM 264334     15:30:36.3 -20:43:43  6.5  1.52  27
PPM 264222     15:25:22.6 -21:55:46  7.6  0.24  26
469442         15:25:35.9 -21:41:47 16.5        26
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:02:16 UT

Marc W. Buie, Southwest Research Institute

RECON