RECON: TNO occultation with 353222

Event between (353222) 09YD7 and star UC4-558-047101 with event index number of 114643

Geocentric closest approach at 2018/04/03 08:13:28 UTC

J2000 position of star is 08:47:01.1 +21:33:46
Equinox of date position of star is 08:48:01.3 +21:29:54
Stellar brightness R=14.7, use SENSEUP=128
Star is 99 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 15.0 AU from the Sun and 14.6 AU from the Earth.
The TNO is moving 5.5 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 364 seconds.
The 1-sigma cross-track error in the shadow position is 2016 km.
The sky-plane scale is 10569.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 11.4 sec chord
Diameter=25.8 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 353222, (2018/04/03 08:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:25.9 +27:58:50  1.1 15.41 114
43Gam Cnc      08:44:20.4 +21:24:06  4.7  0.87 100
PPM 099029     08:47:32.4 +22:17:04  8.5  0.80 100
PPM 099039     08:48:17.8 +21:28:30  9.4  0.06  99
353222         08:48:04.4 +21:29:42 14.7        99
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 2.5 sigma about the mid-time.
The median site spacing is 3.3 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 08:14:08 -41.8 Dark Up 22.4 279.9 Low 07:59:08 - 08:29:08 7507
DCO 08:10:44 -48.7 Dark Up 28.6 277.4 Low 07:55:44 - 08:25:44 7174
Patrick 08:10:51 -48.6 Dark Up 29.2 276.8 Low 07:55:51 - 08:25:51 7144
Kingman/Dolan Springs 08:10:47 -48.8 Dark Up 29.4 276.9 Low 07:55:47 - 08:25:47 7134
Lake Havasu City 08:10:30 -49.5 Dark Up 29.6 277.1 Low 07:55:30 - 08:25:30 7114
Parker 08:10:26 -49.9 Dark Up 29.5 277.3 Low 07:55:26 - 08:25:26 7111
Laughlin/Bullhead City 08:10:44 -48.9 Dark Up 29.8 276.6 Low 07:55:44 - 08:25:44 7109
Mohave Valley 08:10:38 -49.2 Dark Up 29.8 276.7 Low 07:55:38 - 08:25:38 7106
Henderson 08:11:03 -48.1 Dark Up 30.2 275.9 Up 07:56:03 - 08:26:03 7099
Searchlight/Boulder City 08:10:49 -48.7 Dark Up 30.1 276.2 Up 07:55:49 - 08:25:49 7097
Blythe 08:10:13 -50.5 Dark Up 29.7 277.4 Low 07:55:13 - 08:25:13 7090
Yuma 08:09:54 -51.4 Dark Up 29.7 277.9 Low 07:54:54 - 08:24:54 7076
Indian Springs 08:11:12 -47.7 Dark Up 30.7 275.2 Up 07:56:12 - 08:26:12 7072
Calipatria 08:10:01 -51.1 Dark Up 30.5 277.2 Up 07:55:01 - 08:25:01 7039
Beatty 08:11:17 -47.5 Dark Up 31.6 274.5 Up 07:56:17 - 08:26:17 7025
Tonopah 08:11:41 -46.4 Dark Up 32.0 273.5 Up 07:56:41 - 08:26:41 7013
Idyllwild 08:10:14 -50.6 Dark Up 31.5 276.3 Up 07:55:14 - 08:25:14 6991
Lone Pine 08:11:08 -47.9 Dark Up 32.7 273.9 Up 07:56:08 - 08:26:08 6960
Bishop 08:11:26 -47.2 Dark Up 32.9 273.2 Up 07:56:26 - 08:26:26 6951
Hawthorne 08:11:47 -46.0 Dark Up 33.1 272.4 Up 07:56:47 - 08:26:47 6949
PNWRO 08:14:27 -38.5 Dark Up 32.8 267.8 Up 07:59:27 - 08:29:27 6943
Pasco 08:14:29 -38.3 Dark Up 32.9 267.5 Up 07:59:29 - 08:29:29 6932
Yerington 08:12:01 -45.6 Dark Up 33.5 271.8 Up 07:57:01 - 08:27:01 6927
George/Umatilla 08:14:22 -38.7 Dark Up 33.1 267.5 Up 07:59:22 - 08:29:22 6924
Lee Vining 08:11:39 -46.6 Dark Up 33.5 272.5 Up 07:56:39 - 08:26:39 6922
Cedarville 08:14:08 -43.1 Dark Up 33.9 269.8 Up 07:59:08 - 08:29:08 6905
Wildwood 08:10:21 -50.5 Dark Up 33.1 275.1 Up 07:55:21 - 08:25:21 6901
Reno 08:12:10 -45.1 Dark Up 34.0 271.1 Up 07:57:10 - 08:27:10 6900
Tonasket 08:15:21 -35.9 Dark Up 32.9 265.8 Up 08:00:21 - 08:30:21 6899
Gardnerville 08:11:57 -45.7 Dark Up 33.9 271.5 Up 07:56:57 - 08:26:57 6899
Carson City 08:12:04 -45.4 Dark Up 34.0 271.3 Up 07:57:04 - 08:27:04 6898
Oroville 08:15:27 -35.6 Dark Up 32.8 265.7 Up 08:00:27 - 08:30:27 6897
Okanogan 08:15:14 -36.2 Dark Up 33.0 265.9 Up 08:00:14 - 08:30:14 6896
Lakeview 08:14:08 -42.4 Dark Up 34.0 269.3 Up 07:59:08 - 08:29:08 6895
Brewster 08:15:07 -36.5 Dark Up 33.2 265.9 Up 08:00:07 - 08:30:07 6891
Susanville 08:14:08 -44.2 Dark Up 34.2 270.3 Up 07:59:08 - 08:29:08 6887
Paisley 08:14:08 -41.9 Dark Up 34.1 268.8 Up 07:59:08 - 08:29:08 6884
Manson/Chelan 08:15:00 -36.7 Dark Up 33.5 265.8 Up 08:00:00 - 08:30:00 6877
Toppenish/White Swan 08:14:30 -38.2 Dark Up 33.8 266.5 Up 07:59:30 - 08:29:30 6877
Entiat 08:15:00 -36.9 Dark Up 33.5 265.8 Up 08:00:00 - 08:30:00 6876
Wenatchee 08:14:53 -37.2 Dark Up 33.6 265.9 Up 07:59:53 - 08:29:53 6873
Portola 08:12:12 -44.8 Dark Up 34.5 270.5 Up 07:57:12 - 08:27:12 6870
Yakima 08:14:36 -38.0 Dark Up 33.9 266.2 Up 07:59:36 - 08:29:36 6869
Ellensburg 08:14:42 -37.6 Dark Up 33.8 266.0 Up 07:59:42 - 08:29:42 6867
North Lake 08:14:08 -41.4 Dark Up 34.4 268.2 Up 07:59:08 - 08:29:08 6866
Goldendale 08:14:19 -38.8 Dark Up 34.2 266.5 Up 07:59:19 - 08:29:19 6861
Gimple 08:12:22 -44.5 Dark Up 34.7 270.0 Up 07:57:22 - 08:27:22 6852
Maupin 08:14:08 -39.5 Dark Up 34.4 266.7 Up 07:59:08 - 08:29:08 6851
Madras/Culver 08:14:08 -40.0 Dark Up 34.5 267.0 Up 07:59:08 - 08:29:08 6851
Redmond 08:14:08 -40.4 Dark Up 34.5 267.3 Up 07:59:08 - 08:29:08 6850
Fall River/Burney 08:14:08 -43.6 Dark Up 34.8 269.3 Up 07:59:08 - 08:29:08 6849
Greenville 08:12:21 -44.5 Dark Up 34.8 270.0 Up 07:57:21 - 08:27:21 6848
Quincy 08:12:18 -44.7 Dark Up 34.8 270.1 Up 07:57:18 - 08:27:18 6847
The Dalles 08:14:15 -39.0 Dark Up 34.5 266.4 Up 07:59:15 - 08:29:15 6845
Bend 08:14:08 -40.6 Dark Up 34.6 267.3 Up 07:59:08 - 08:29:08 6844
Tulelake 08:14:08 -42.7 Dark Up 34.8 268.6 Up 07:59:08 - 08:29:08 6843
Oregon Observatory 08:14:08 -40.8 Dark Up 34.8 267.3 Up 07:59:08 - 08:29:08 6839
La Pine/Gilchrist 08:14:08 -41.0 Dark Up 34.8 267.4 Up 07:59:08 - 08:29:08 6837
Sisters 08:14:08 -40.4 Dark Up 34.8 267.0 Up 07:59:08 - 08:29:08 6832
Klamath Falls 08:14:08 -42.4 Dark Up 35.1 268.3 Up 07:59:08 - 08:29:08 6828
Chiloquin 08:14:08 -42.1 Dark Up 35.1 268.0 Up 07:59:08 - 08:29:08 6823
CPSLO 08:10:43 -49.3 Dark Up 34.8 273.2 Up 07:55:43 - 08:25:43 6813

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 353222, (2018/04/03 08:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.41 114
43Gam Cnc      08:43:17.0 +21:28:06  4.7  0.87 100
PPM 099029     08:46:28.8 +22:21:08  8.5  0.80 100
PPM 099039     08:47:14.6 +21:32:34  9.4  0.06  99
353222         08:47:01.1 +21:33:46 14.7        99
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:00:52 UT

Marc W. Buie, Southwest Research Institute

RECON