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 04:56:31.0 +32:12:56
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 423 seconds.
The 1-sigma cross-track error in the shadow position is 5970 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 2.1 sigma about the mid-time.
The median site spacing is 21.5 km RECON observability=1.0 and success probability=7.6%
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 4058
Tonasket 04:13:39 -39.8 Dark Up 57.1 105.8 Up 03:58:39 - 04:28:39 4036
Okanogan 04:13:40 -39.7 Dark Up 57.0 105.2 Up 03:58:40 - 04:28:40 4010
Brewster 04:13:41 -39.6 Dark Up 57.0 104.5 Up 03:58:41 - 04:28:41 3991
Manson/Chelan 04:13:43 -39.4 Dark Up 56.8 103.9 Up 03:58:43 - 04:28:43 3983
Entiat 04:13:43 -39.4 Dark Up 56.8 103.5 Up 03:58:43 - 04:28:43 3965
Wenatchee 04:13:44 -39.4 Dark Up 56.8 103.0 Up 03:58:44 - 04:28:44 3945
Ellensburg 04:13:45 -39.3 Dark Up 56.8 102.2 Up 03:58:45 - 04:28:45 3914
Yakima 04:13:46 -39.3 Dark Up 56.8 101.6 Up 03:58:46 - 04:28:46 3877
Toppenish/White Swan 04:13:47 -39.5 Dark Up 57.0 101.4 Up 03:58:47 - 04:28:47 3851
Goldendale 04:13:49 -39.2 Dark Up 56.8 100.2 Up 03:58:49 - 04:28:49 3814
The Dalles 04:13:50 -39.0 Dark Up 56.6 99.5 Up 03:58:50 - 04:28:50 3805
Pasco 04:13:44 -40.4 Dark Up 57.9 102.4 Up 03:58:44 - 04:28:44 3800
George/Umatilla 04:13:46 -40.2 Dark Up 57.8 101.7 Up 03:58:46 - 04:28:46 3776
PNWRO 04:13:44 -40.5 Dark Up 58.1 102.2 Up 03:58:44 - 04:28:44 3770
Maupin 04:13:51 -39.1 Dark Up 56.7 99.0 Up 03:58:51 - 04:28:51 3762
Madras/Culver 04:13:53 -39.2 Dark Up 56.8 98.1 Up 03:58:53 - 04:28:53 3713
Sisters 04:13:54 -38.9 Dark Up 56.5 97.3 Up 03:58:54 - 04:28:54 3696
Redmond 04:13:53 -39.2 Dark Up 56.8 97.6 Up 03:58:53 - 04:28:53 3681
Bend 04:13:54 -39.1 Dark Up 56.7 97.1 Up 03:58:54 - 04:28:54 3665
Oregon Observatory 04:13:55 -39.0 Dark Up 56.7 96.7 Up 03:58:55 - 04:28:55 3653
La Pine/Gilchrist 04:13:55 -39.0 Dark Up 56.7 96.4 Up 03:58:55 - 04:28:55 3636
North Lake 04:13:55 -39.4 Dark Up 57.1 96.2 Up 03:58:55 - 04:28:55 3575
Chiloquin 04:13:59 -38.8 Dark Up 56.5 94.4 Up 03:58:59 - 04:28:59 3544
Paisley 04:13:55 -39.7 Dark Up 57.5 95.6 Up 03:58:55 - 04:28:55 3511
Klamath Falls 04:14:00 -38.9 Dark Up 56.6 94.0 Up 03:59:00 - 04:29:00 3508
Tulelake 04:13:59 -39.1 Dark Up 56.8 93.8 Up 03:58:59 - 04:28:59 3472
Lakeview 04:13:56 -39.9 Dark Up 57.6 95.0 Up 03:58:56 - 04:28:56 3456
Cedarville 04:13:57 -40.1 Dark Up 57.8 94.1 Up 03:58:57 - 04:28:57 3387
Fall River/Burney 04:14:01 -39.2 Dark Up 57.0 92.5 Up 03:59:01 - 04:29:01 3383
Susanville 04:14:01 -39.8 Dark Up 57.5 92.0 Up 03:59:01 - 04:29:01 3296
Greenville 04:14:02 -39.5 Dark Up 57.3 91.4 Up 03:59:02 - 04:29:02 3280
Gimple 04:14:02 -39.6 Dark Up 57.4 91.4 Up 03:59:02 - 04:29:02 3277
Quincy 04:14:02 -39.6 Dark Up 57.3 91.1 Up 03:59:02 - 04:29:02 3261
Portola 04:14:01 -39.9 Dark Up 57.7 91.2 Up 03:59:01 - 04:29:01 3232
Reno 04:14:01 -40.4 Dark Up 58.2 91.2 Up 03:59:01 - 04:29:01 3183
Carson City 04:14:01 -40.5 Dark Up 58.2 90.6 Up 03:59:01 - 04:29:01 3147
Gardnerville 04:14:01 -40.5 Dark Up 58.3 90.3 Up 03:59:01 - 04:29:01 3122
Yerington 04:14:00 -40.9 Dark Up 58.7 90.7 Up 03:59:00 - 04:29:00 3106
Hawthorne 04:14:00 -41.4 Dark Up 59.1 90.3 Up 03:59:00 - 04:29:00 3042
Lee Vining 04:14:02 -41.0 Dark Up 58.8 89.1 Up 03:59:02 - 04:29:02 3004
Tonopah 04:13:57 -42.5 Dark Up 60.2 90.4 Up 03:58:57 - 04:28:57 2947
Bishop 04:14:01 -41.6 Dark Up 59.3 88.5 Up 03:59:01 - 04:29:01 2919
Lone Pine 04:14:02 -41.9 Dark Up 59.6 87.4 Up 03:59:02 - 04:29:02 2832
Beatty 04:13:58 -42.9 Dark Up 60.6 88.6 Up 03:58:58 - 04:28:58 2816
CPSLO 04:14:11 -39.8 Dark Up 57.4 84.0 Up 03:59:11 - 04:29:11 2798
Niwot 04:13:13 -51.4 Dark Up 69.1 104.7 Up 03:58:13 - 04:28:13 2794
Indian Springs 04:13:55 -43.7 Dark Up 61.4 88.6 Up 03:58:55 - 04:28:55 2747
Henderson 04:13:55 -44.3 Dark Up 62.0 88.0 Up 03:58:55 - 04:28:55 2669
Searchlight/Boulder City 04:13:55 -44.4 Dark Up 62.0 87.0 Up 03:58:55 - 04:28:55 2609
Wildwood 04:14:08 -41.4 Dark Up 58.9 82.9 Up 03:59:08 - 04:29:08 2602
Patrick 04:13:52 -45.2 Dark Up 62.9 87.4 Up 03:58:52 - 04:28:52 2568
Laughlin/Bullhead City 04:13:55 -44.7 Dark Up 62.3 86.6 Up 03:58:55 - 04:28:55 2567
Kingman/Dolan Springs 04:13:54 -45.1 Dark Up 62.7 86.9 Up 03:58:54 - 04:28:54 2552
Mohave Valley 04:13:55 -44.7 Dark Up 62.3 86.0 Up 03:58:55 - 04:28:55 2540
DCO 04:13:51 -45.8 Dark Up 63.4 87.1 Up 03:58:51 - 04:28:51 2513
Idyllwild 04:14:04 -42.9 Dark Up 60.4 83.0 Up 03:59:04 - 04:29:04 2497
Lake Havasu City 04:13:55 -44.9 Dark Up 62.4 85.4 Up 03:58:55 - 04:28:55 2490
Parker 04:13:56 -44.9 Dark Up 62.4 84.7 Up 03:58:56 - 04:28:56 2454
Blythe 04:13:58 -44.7 Dark Up 62.1 83.6 Up 03:58:58 - 04:28:58 2411
Calipatria 04:14:01 -43.9 Dark Up 61.3 82.4 Up 03:59:01 - 04:29:01 2393
Yuma 04:13:59 -44.6 Dark Up 62.0 81.9 Up 03:58:59 - 04:28:59 2318

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 2017/12/05 19:08:07 UT

Marc W. Buie, Southwest Research Institute

RECON