RECON: TNO occultation with 470443

Event between (470443) 07XV50 and star GA1220:01299123 with event index number of 169816

Geocentric closest approach at 2018/12/23 04:07:55 UTC

J2000 position of star is 04:55:21.4 +32:11:16
Equinox of date position of star is 04:56:33.0 +32:12:58
Stellar brightness G=14.8, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 46.8 AU from the Sun and 45.9 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 243 seconds.
The 1-sigma cross-track error in the shadow position is 3691 km.
The sky-plane scale is 33298.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 31.5 sec chord
Diameter=324.3 km assuming a 30% albedo -- 12.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 470443, (2018/12/23 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 16.29  28
3Iot Aur       04:58:13.9 +33:11:40  2.7  1.04  24
PPM 069666     04:50:32.9 +32:37:11  6.0  1.34  25
PPM 069753     04:56:41.9 +32:11:01  7.5  0.04  24
470443         04:56:35.1 +32:13:01 14.8        24
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 3.7 sigma about the mid-time.
The median site spacing is 24.2 km RECON observability=1.0 and success probability=7.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 04:09:31 -38.9 Dark Up 56.1 105.8 Up 03:54:31 - 04:24:31 6565
Oroville 04:09:32 -39.1 Dark Up 56.3 105.1 Up 03:54:32 - 04:24:32 6507
Tonasket 04:09:33 -39.1 Dark Up 56.4 104.8 Up 03:54:33 - 04:24:33 6486
Okanogan 04:09:34 -39.0 Dark Up 56.4 104.1 Up 03:54:34 - 04:24:34 6460
Brewster 04:09:34 -39.0 Dark Up 56.3 103.5 Up 03:54:34 - 04:24:34 6441
Manson/Chelan 04:09:36 -38.7 Dark Up 56.1 102.9 Up 03:54:36 - 04:24:36 6434
Entiat 04:09:37 -38.7 Dark Up 56.1 102.5 Up 03:54:37 - 04:24:37 6416
Wenatchee 04:09:37 -38.7 Dark Up 56.1 102.0 Up 03:54:37 - 04:24:37 6396
Ellensburg 04:09:39 -38.6 Dark Up 56.1 101.2 Up 03:54:39 - 04:24:39 6365
Yakima 04:09:40 -38.6 Dark Up 56.1 100.6 Up 03:54:40 - 04:24:40 6328
Toppenish/White Swan 04:09:41 -38.8 Dark Up 56.3 100.5 Up 03:54:41 - 04:24:41 6303
Goldendale 04:09:43 -38.5 Dark Up 56.1 99.3 Up 03:54:43 - 04:24:43 6266
The Dalles 04:09:44 -38.3 Dark Up 55.9 98.6 Up 03:54:44 - 04:24:44 6257
Pasco 04:09:38 -39.6 Dark Up 57.2 101.4 Up 03:54:38 - 04:24:38 6251
George/Umatilla 04:09:39 -39.5 Dark Up 57.1 100.7 Up 03:54:39 - 04:24:39 6227
PNWRO 04:09:38 -39.8 Dark Up 57.4 101.3 Up 03:54:38 - 04:24:38 6221
Maupin 04:09:45 -38.4 Dark Up 56.0 98.1 Up 03:54:45 - 04:24:45 6215
Madras/Culver 04:09:46 -38.4 Dark Up 56.1 97.3 Up 03:54:46 - 04:24:46 6165
Sisters 04:09:48 -38.1 Dark Up 55.8 96.4 Up 03:54:48 - 04:24:48 6150
Redmond 04:09:48 -38.4 Dark Up 56.1 96.7 Up 03:54:48 - 04:24:48 6134
Bend 04:09:48 -38.3 Dark Up 56.0 96.3 Up 03:54:48 - 04:24:48 6119
Oregon Observatory 04:09:49 -38.3 Dark Up 55.9 95.9 Up 03:54:49 - 04:24:49 6107
La Pine/Gilchrist 04:09:49 -38.2 Dark Up 55.9 95.6 Up 03:54:49 - 04:24:49 6090
North Lake 04:09:49 -38.7 Dark Up 56.4 95.4 Up 03:54:49 - 04:24:49 6028
Chiloquin 04:09:52 -38.0 Dark Up 55.8 93.7 Up 03:54:52 - 04:24:52 5998
Paisley 04:09:49 -39.0 Dark Up 56.7 94.8 Up 03:54:49 - 04:24:49 5964
Klamath Falls 04:09:53 -38.1 Dark Up 55.8 93.2 Up 03:54:53 - 04:24:53 5963
Tulelake 04:09:53 -38.3 Dark Up 56.1 93.0 Up 03:54:53 - 04:24:53 5927
Lakeview 04:09:50 -39.1 Dark Up 56.9 94.2 Up 03:54:50 - 04:24:50 5910
Cedarville 04:09:51 -39.3 Dark Up 57.1 93.3 Up 03:54:51 - 04:24:51 5841
Fall River/Burney 04:09:55 -38.4 Dark Up 56.2 91.8 Up 03:54:55 - 04:24:55 5838
Susanville 04:09:55 -39.0 Dark Up 56.8 91.3 Up 03:54:55 - 04:24:55 5751
Greenville 04:09:56 -38.8 Dark Up 56.5 90.7 Up 03:54:56 - 04:24:56 5736
Gimple 04:09:56 -38.8 Dark Up 56.6 90.8 Up 03:54:56 - 04:24:56 5732
Quincy 04:09:57 -38.8 Dark Up 56.6 90.4 Up 03:54:57 - 04:24:57 5716
Portola 04:09:56 -39.1 Dark Up 56.9 90.5 Up 03:54:56 - 04:24:56 5687
Reno 04:09:54 -39.6 Dark Up 57.4 90.5 Up 03:54:54 - 04:24:54 5638
Carson City 04:09:55 -39.7 Dark Up 57.4 90.0 Up 03:54:55 - 04:24:55 5603
Gardnerville 04:09:56 -39.7 Dark Up 57.5 89.6 Up 03:54:56 - 04:24:56 5577
Yerington 04:09:55 -40.2 Dark Up 57.9 90.1 Up 03:54:55 - 04:24:55 5561
Hawthorne 04:09:54 -40.6 Dark Up 58.3 89.6 Up 03:54:54 - 04:24:54 5497
Lee Vining 04:09:56 -40.2 Dark Up 57.9 88.4 Up 03:54:56 - 04:24:56 5459
Tonopah 04:09:52 -41.7 Dark Up 59.4 89.7 Up 03:54:52 - 04:24:52 5401
Bishop 04:09:56 -40.8 Dark Up 58.5 87.9 Up 03:54:56 - 04:24:56 5375
Lone Pine 04:09:56 -41.0 Dark Up 58.7 86.8 Up 03:54:56 - 04:24:56 5288
Beatty 04:09:53 -42.1 Dark Up 59.8 88.0 Up 03:54:53 - 04:24:53 5271
CPSLO 04:10:06 -38.9 Dark Up 56.6 83.6 Up 03:55:06 - 04:25:06 5256
Niwot 04:09:14 -50.6 Dark Up 68.4 103.6 Up 03:54:14 - 04:24:14 5236
Indian Springs 04:09:50 -42.9 Dark Up 60.6 88.0 Up 03:54:50 - 04:24:50 5201
Henderson 04:09:49 -43.5 Dark Up 61.2 87.5 Up 03:54:49 - 04:24:49 5123
Searchlight/Boulder City 04:09:50 -43.5 Dark Up 61.2 86.4 Up 03:54:50 - 04:24:50 5063
Wildwood 04:10:03 -40.5 Dark Up 58.1 82.5 Up 03:55:03 - 04:25:03 5059
Patrick 04:09:48 -44.4 Dark Up 62.0 86.9 Up 03:54:48 - 04:24:48 5022
Laughlin/Bullhead City 04:09:50 -43.8 Dark Up 61.4 86.1 Up 03:54:50 - 04:24:50 5021
Kingman/Dolan Springs 04:09:48 -44.3 Dark Up 61.9 86.4 Up 03:54:48 - 04:24:48 5006
Mohave Valley 04:09:50 -43.8 Dark Up 61.4 85.6 Up 03:54:50 - 04:24:50 4994
DCO 04:09:46 -45.0 Dark Up 62.6 86.6 Up 03:54:46 - 04:24:46 4967
Idyllwild 04:09:58 -42.1 Dark Up 59.6 82.7 Up 03:54:58 - 04:24:58 4953
Lake Havasu City 04:09:50 -44.0 Dark Up 61.6 84.9 Up 03:54:50 - 04:24:50 4944
Parker 04:09:51 -44.1 Dark Up 61.6 84.3 Up 03:54:51 - 04:24:51 4908
Blythe 04:09:52 -43.8 Dark Up 61.3 83.2 Up 03:54:52 - 04:24:52 4865
Calipatria 04:09:56 -43.0 Dark Up 60.5 82.0 Up 03:54:56 - 04:24:56 4849
Yuma 04:09:54 -43.8 Dark Up 61.2 81.6 Up 03:54:54 - 04:24:54 4773

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 470443, (2018/12/23 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 16.29  28
3Iot Aur       04:56:59.6 +33:09:58  2.7  1.04  24
PPM 069666     04:49:19.1 +32:35:16  6.0  1.34  25
PPM 069753     04:55:28.2 +32:09:17  7.5  0.04  24
470443         04:55:21.4 +32:11:16 14.8        24
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:40:18 UT

Marc W. Buie, Southwest Research Institute

RECON