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 08:13:27 UTC

J2000 position of star is 08:47:01.1 +21:33:46
Equinox of date position of star is 08:48:03.2 +21:29:47
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 730 seconds.
The 1-sigma cross-track error in the shadow position is 4042 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         07:46:25.8 +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 1.2 sigma about the mid-time.
The median site spacing is 3.1 km RECON observability=1.0 and success probability=2.2%
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 7495
DCO 08:10:50 -48.7 Dark Up 28.6 277.4 Low 07:55:50 - 08:25:50 7160
Patrick 08:10:48 -48.6 Dark Up 29.2 276.8 Low 07:55:48 - 08:25:48 7131
Kingman/Dolan Springs 08:10:44 -48.8 Dark Up 29.4 276.8 Low 07:55:44 - 08:25:44 7120
Lake Havasu City 08:10:30 -49.6 Dark Up 29.6 277.1 Low 07:55:30 - 08:25:30 7100
Parker 08:10:23 -49.9 Dark Up 29.5 277.3 Low 07:55:23 - 08:25:23 7097
Laughlin/Bullhead City 08:10:43 -48.9 Dark Up 29.8 276.6 Low 07:55:43 - 08:25:43 7096
Mohave Valley 08:10:38 -49.2 Dark Up 29.8 276.7 Low 07:55:38 - 08:25:38 7093
Henderson 08:11:04 -48.1 Dark Up 30.1 275.9 Up 07:56:04 - 08:26:04 7085
Searchlight/Boulder City 08:10:47 -48.7 Dark Up 30.1 276.2 Up 07:55:47 - 08:25:47 7083
Blythe 08:10:12 -50.5 Dark Up 29.7 277.4 Low 07:55:12 - 08:25:12 7077
Yuma 08:09:53 -51.4 Dark Up 29.7 277.9 Low 07:54:53 - 08:24:53 7062
Indian Springs 08:11:15 -47.7 Dark Up 30.7 275.2 Up 07:56:15 - 08:26:15 7058
Calipatria 08:10:03 -51.1 Dark Up 30.5 277.2 Up 07:55:03 - 08:25:03 7025
Beatty 08:11:18 -47.5 Dark Up 31.6 274.5 Up 07:56:18 - 08:26:18 7010
Tonopah 08:11:41 -46.4 Dark Up 32.0 273.5 Up 07:56:41 - 08:26:41 6998
Idyllwild 08:10:15 -50.6 Dark Up 31.5 276.3 Up 07:55:15 - 08:25:15 6976
Lone Pine 08:11:05 -47.9 Dark Up 32.7 273.9 Up 07:56:05 - 08:26:05 6945
Bishop 08:11:25 -47.2 Dark Up 32.9 273.2 Up 07:56:25 - 08:26:25 6936
Hawthorne 08:11:50 -46.0 Dark Up 33.1 272.4 Up 07:56:50 - 08:26:50 6934
PNWRO 08:14:28 -38.5 Dark Up 32.8 267.8 Up 07:59:28 - 08:29:28 6930
Pasco 08:14:29 -38.3 Dark Up 32.9 267.5 Up 07:59:29 - 08:29:29 6919
Yerington 08:11:59 -45.6 Dark Up 33.5 271.8 Up 07:56:59 - 08:26:59 6912
George/Umatilla 08:14:25 -38.7 Dark Up 33.1 267.5 Up 07:59:25 - 08:29:25 6912
Lee Vining 08:11:33 -46.6 Dark Up 33.5 272.4 Up 07:56:33 - 08:26:33 6906
Cedarville 08:14:08 -43.1 Dark Up 33.9 269.8 Up 07:59:08 - 08:29:08 6891
Tonasket 08:15:18 -35.9 Dark Up 32.9 265.8 Up 08:00:18 - 08:30:18 6887
Wildwood 08:10:15 -50.5 Dark Up 33.1 275.1 Up 07:55:15 - 08:25:15 6886
Oroville 08:15:24 -35.6 Dark Up 32.8 265.7 Up 08:00:24 - 08:30:24 6885
Reno 08:12:10 -45.1 Dark Up 34.0 271.1 Up 07:57:10 - 08:27:10 6885
Okanogan 08:15:11 -36.2 Dark Up 33.0 265.9 Up 08:00:11 - 08:30:11 6884
Gardnerville 08:11:54 -45.7 Dark Up 33.9 271.5 Up 07:56:54 - 08:26:54 6884
Carson City 08:12:06 -45.4 Dark Up 34.0 271.3 Up 07:57:06 - 08:27:06 6883
Lakeview 08:14:08 -42.4 Dark Up 34.0 269.3 Up 07:59:08 - 08:29:08 6880
Brewster 08:15:07 -36.5 Dark Up 33.2 265.9 Up 08:00:07 - 08:30:07 6878
Susanville 08:14:08 -44.2 Dark Up 34.2 270.3 Up 07:59:08 - 08:29:08 6872
Paisley 08:14:08 -41.9 Dark Up 34.1 268.8 Up 07:59:08 - 08:29:08 6870
Manson/Chelan 08:15:00 -36.7 Dark Up 33.5 265.8 Up 08:00:00 - 08:30:00 6865
Toppenish/White Swan 08:14:29 -38.2 Dark Up 33.8 266.5 Up 07:59:29 - 08:29:29 6864
Entiat 08:14:57 -36.9 Dark Up 33.5 265.8 Up 07:59:57 - 08:29:57 6864
Wenatchee 08:14:51 -37.2 Dark Up 33.6 265.9 Up 07:59:51 - 08:29:51 6861
Yakima 08:14:37 -38.0 Dark Up 33.9 266.2 Up 07:59:37 - 08:29:37 6856
Portola 08:12:14 -44.8 Dark Up 34.5 270.5 Up 07:57:14 - 08:27:14 6855
Ellensburg 08:14:44 -37.6 Dark Up 33.8 266.0 Up 07:59:44 - 08:29:44 6854
North Lake 08:14:08 -41.4 Dark Up 34.4 268.2 Up 07:59:08 - 08:29:08 6851
Goldendale 08:14:20 -38.8 Dark Up 34.2 266.5 Up 07:59:20 - 08:29:20 6848
Maupin 08:14:09 -39.5 Dark Up 34.4 266.7 Up 07:59:09 - 08:29:09 6838
Madras/Culver 08:14:08 -40.0 Dark Up 34.5 267.0 Up 07:59:08 - 08:29:08 6838
Gimple 08:12:19 -44.5 Dark Up 34.7 270.0 Up 07:57:19 - 08:27:19 6838
Redmond 08:14:08 -40.4 Dark Up 34.5 267.3 Up 07:59:08 - 08:29:08 6836
Fall River/Burney 08:14:08 -43.6 Dark Up 34.8 269.3 Up 07:59:08 - 08:29:08 6834
Greenville 08:12:21 -44.5 Dark Up 34.8 270.0 Up 07:57:21 - 08:27:21 6833
The Dalles 08:14:16 -39.0 Dark Up 34.4 266.4 Up 07:59:16 - 08:29:16 6832
Quincy 08:12:15 -44.7 Dark Up 34.8 270.1 Up 07:57:15 - 08:27:15 6832
Bend 08:14:08 -40.6 Dark Up 34.6 267.3 Up 07:59:08 - 08:29:08 6830
Tulelake 08:14:08 -42.7 Dark Up 34.8 268.6 Up 07:59:08 - 08:29:08 6828
Oregon Observatory 08:14:08 -40.8 Dark Up 34.8 267.3 Up 07:59:08 - 08:29:08 6825
La Pine/Gilchrist 08:14:08 -41.0 Dark Up 34.8 267.4 Up 07:59:08 - 08:29:08 6822
Sisters 08:14:08 -40.4 Dark Up 34.8 266.9 Up 07:59:08 - 08:29:08 6818
Klamath Falls 08:14:08 -42.4 Dark Up 35.1 268.3 Up 07:59:08 - 08:29:08 6813
Chiloquin 08:14:08 -42.1 Dark Up 35.1 268.0 Up 07:59:08 - 08:29:08 6808
CPSLO 08:10:40 -49.3 Dark Up 34.8 273.2 Up 07:55:40 - 08:25:40 6798

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 2017/12/02 17:25:03 UT

Marc W. Buie, Southwest Research Institute

RECON