RECON: TNO occultation with 470443

Event between (470443) 07XV50 and star UC4-611-016946 with event index number of 169816

Geocentric closest approach at 2018/12/23 04:12:03 UTC

J2000 position of star is 04:55:21.4 +32:11:16
Equinox of date position of star is 04:56:27.4 +32:12:50
Stellar brightness R=14.9, 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 246 seconds.
The 1-sigma cross-track error in the shadow position is 3648 km.
The sky-plane scale is 33298.0 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 04:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:46  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 14.9        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 21.5 km RECON observability=1.0 and success probability=11.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:13:38 -39.7 Dark Up 57.0 106.1 Up 03:58:38 - 04:28:38 4050
Tonasket 04:13:38 -39.8 Dark Up 57.0 105.8 Up 03:58:38 - 04:28:38 4028
Okanogan 04:13:39 -39.7 Dark Up 57.0 105.1 Up 03:58:39 - 04:28:39 4002
Brewster 04:13:40 -39.6 Dark Up 57.0 104.5 Up 03:58:40 - 04:28:40 3983
Manson/Chelan 04:13:42 -39.4 Dark Up 56.8 103.9 Up 03:58:42 - 04:28:42 3975
Entiat 04:13:42 -39.4 Dark Up 56.8 103.5 Up 03:58:42 - 04:28:42 3957
Wenatchee 04:13:43 -39.4 Dark Up 56.8 103.0 Up 03:58:43 - 04:28:43 3936
Ellensburg 04:13:44 -39.3 Dark Up 56.8 102.2 Up 03:58:44 - 04:28:44 3905
Yakima 04:13:46 -39.3 Dark Up 56.8 101.6 Up 03:58:46 - 04:28:46 3868
Toppenish/White Swan 04:13:45 -39.5 Dark Up 57.0 101.4 Up 03:58:45 - 04:28:45 3843
Goldendale 04:13:48 -39.2 Dark Up 56.8 100.2 Up 03:58:48 - 04:28:48 3805
The Dalles 04:13:49 -39.0 Dark Up 56.6 99.5 Up 03:58:49 - 04:28:49 3796
Pasco 04:13:43 -40.3 Dark Up 57.9 102.4 Up 03:58:43 - 04:28:43 3792
George/Umatilla 04:13:44 -40.2 Dark Up 57.8 101.7 Up 03:58:44 - 04:28:44 3767
PNWRO 04:13:43 -40.5 Dark Up 58.1 102.2 Up 03:58:43 - 04:28:43 3761
Maupin 04:13:50 -39.1 Dark Up 56.7 99.0 Up 03:58:50 - 04:28:50 3753
Madras/Culver 04:13:51 -39.2 Dark Up 56.8 98.1 Up 03:58:51 - 04:28:51 3704
Sisters 04:13:53 -38.9 Dark Up 56.5 97.3 Up 03:58:53 - 04:28:53 3687
Redmond 04:13:52 -39.1 Dark Up 56.8 97.6 Up 03:58:52 - 04:28:52 3672
Bend 04:13:53 -39.1 Dark Up 56.7 97.1 Up 03:58:53 - 04:28:53 3656
Oregon Observatory 04:13:54 -39.0 Dark Up 56.7 96.7 Up 03:58:54 - 04:28:54 3644
La Pine/Gilchrist 04:13:55 -39.0 Dark Up 56.7 96.4 Up 03:58:55 - 04:28:55 3627
North Lake 04:13:54 -39.4 Dark Up 57.1 96.2 Up 03:58:54 - 04:28:54 3566
Chiloquin 04:13:58 -38.8 Dark Up 56.5 94.4 Up 03:58:58 - 04:28:58 3534
Paisley 04:13:55 -39.7 Dark Up 57.5 95.6 Up 03:58:55 - 04:28:55 3502
Klamath Falls 04:13:58 -38.8 Dark Up 56.6 94.0 Up 03:58:58 - 04:28:58 3499
Tulelake 04:13:58 -39.1 Dark Up 56.8 93.8 Up 03:58:58 - 04:28:58 3463
Lakeview 04:13:55 -39.9 Dark Up 57.6 95.0 Up 03:58:55 - 04:28:55 3447
Cedarville 04:13:56 -40.1 Dark Up 57.8 94.1 Up 03:58:56 - 04:28:56 3378
Fall River/Burney 04:14:00 -39.2 Dark Up 57.0 92.5 Up 03:59:00 - 04:29:00 3373
Susanville 04:14:00 -39.8 Dark Up 57.5 92.0 Up 03:59:00 - 04:29:00 3287
Greenville 04:14:01 -39.5 Dark Up 57.3 91.4 Up 03:59:01 - 04:29:01 3271
Gimple 04:14:01 -39.6 Dark Up 57.4 91.4 Up 03:59:01 - 04:29:01 3268
Quincy 04:14:02 -39.6 Dark Up 57.3 91.1 Up 03:59:02 - 04:29:02 3251
Portola 04:14:01 -39.9 Dark Up 57.7 91.2 Up 03:59:01 - 04:29:01 3222
Reno 04:14:00 -40.4 Dark Up 58.2 91.2 Up 03:59:00 - 04:29:00 3174
Carson City 04:14:01 -40.5 Dark Up 58.2 90.6 Up 03:59:01 - 04:29:01 3138
Gardnerville 04:14:01 -40.5 Dark Up 58.3 90.3 Up 03:59:01 - 04:29:01 3112
Yerington 04:13:59 -40.9 Dark Up 58.7 90.7 Up 03:58:59 - 04:28:59 3097
Hawthorne 04:13:59 -41.4 Dark Up 59.1 90.3 Up 03:58:59 - 04:28:59 3033
Lee Vining 04:14:01 -41.0 Dark Up 58.8 89.0 Up 03:59:01 - 04:29:01 2994
Tonopah 04:13:56 -42.5 Dark Up 60.2 90.4 Up 03:58:56 - 04:28:56 2938
Bishop 04:14:01 -41.6 Dark Up 59.3 88.5 Up 03:59:01 - 04:29:01 2910
Lone Pine 04:14:01 -41.9 Dark Up 59.6 87.4 Up 03:59:01 - 04:29:01 2822
Beatty 04:13:57 -42.9 Dark Up 60.6 88.6 Up 03:58:57 - 04:28:57 2807
CPSLO 04:14:11 -39.7 Dark Up 57.4 84.0 Up 03:59:11 - 04:29:11 2788
Niwot 04:13:13 -51.4 Dark Up 69.1 104.7 Up 03:58:13 - 04:28:13 2786
Indian Springs 04:13:55 -43.7 Dark Up 61.4 88.6 Up 03:58:55 - 04:28:55 2737
Henderson 04:13:54 -44.3 Dark Up 62.0 88.0 Up 03:58:54 - 04:28:54 2660
Searchlight/Boulder City 04:13:55 -44.4 Dark Up 62.0 87.0 Up 03:58:55 - 04:28:55 2600
Wildwood 04:14:07 -41.4 Dark Up 58.9 82.9 Up 03:59:07 - 04:29:07 2591
Patrick 04:13:51 -45.2 Dark Up 62.9 87.4 Up 03:58:51 - 04:28:51 2559
Laughlin/Bullhead City 04:13:54 -44.7 Dark Up 62.3 86.6 Up 03:58:54 - 04:28:54 2558
Kingman/Dolan Springs 04:13:52 -45.1 Dark Up 62.7 86.8 Up 03:58:52 - 04:28:52 2543
Mohave Valley 04:13:55 -44.7 Dark Up 62.3 86.0 Up 03:58:55 - 04:28:55 2530
DCO 04:13:50 -45.8 Dark Up 63.4 87.1 Up 03:58:50 - 04:28:50 2504
Idyllwild 04:14:03 -42.9 Dark Up 60.4 83.0 Up 03:59:03 - 04:29:03 2487
Lake Havasu City 04:13:55 -44.9 Dark Up 62.4 85.4 Up 03:58:55 - 04:28:55 2481
Parker 04:13:55 -44.9 Dark Up 62.4 84.7 Up 03:58:55 - 04:28:55 2444
Blythe 04:13:57 -44.7 Dark Up 62.1 83.6 Up 03:58:57 - 04:28:57 2401
Calipatria 04:14:00 -43.9 Dark Up 61.3 82.4 Up 03:59:00 - 04:29:00 2383
Yuma 04:13:58 -44.6 Dark Up 62.0 81.9 Up 03:58:58 - 04:28:58 2308

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 04:12UT)
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 14.9        24
Positions are for J2000

Event circumstances last updated at 2017/01/01 19:06:30 UT

Marc W. Buie, Southwest Research Institute

RECON