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 04:09:51 UTC

J2000 position of star is 04:55:21.4 +32:11:16
Equinox of date position of star is 04:56:31.8 +32:12:57
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 201 seconds.
The 1-sigma cross-track error in the shadow position is 3114 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 04:10UT)
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 4.5 sigma about the mid-time.
The median site spacing is 21.4 km RECON observability=1.0 and success probability=10.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:11:27 -39.4 Dark Up 56.6 105.6 Up 03:56:27 - 04:26:27 4927
Tonasket 04:11:28 -39.4 Dark Up 56.7 105.2 Up 03:56:28 - 04:26:28 4905
Okanogan 04:11:28 -39.4 Dark Up 56.7 104.6 Up 03:56:28 - 04:26:28 4879
Brewster 04:11:30 -39.3 Dark Up 56.6 104.0 Up 03:56:30 - 04:26:30 4860
Manson/Chelan 04:11:31 -39.1 Dark Up 56.4 103.3 Up 03:56:31 - 04:26:31 4853
Entiat 04:11:32 -39.0 Dark Up 56.5 102.9 Up 03:56:32 - 04:26:32 4835
Wenatchee 04:11:33 -39.0 Dark Up 56.4 102.5 Up 03:56:33 - 04:26:33 4815
Ellensburg 04:11:35 -38.9 Dark Up 56.4 101.7 Up 03:56:35 - 04:26:35 4784
Yakima 04:11:35 -39.0 Dark Up 56.5 101.1 Up 03:56:35 - 04:26:35 4747
Toppenish/White Swan 04:11:35 -39.1 Dark Up 56.6 100.9 Up 03:56:35 - 04:26:35 4721
Goldendale 04:11:37 -38.9 Dark Up 56.4 99.7 Up 03:56:37 - 04:26:37 4684
The Dalles 04:11:39 -38.6 Dark Up 56.2 99.0 Up 03:56:39 - 04:26:39 4675
Pasco 04:11:33 -40.0 Dark Up 57.5 101.9 Up 03:56:33 - 04:26:33 4670
George/Umatilla 04:11:34 -39.9 Dark Up 57.4 101.2 Up 03:56:34 - 04:26:34 4646
PNWRO 04:11:33 -40.2 Dark Up 57.7 101.7 Up 03:56:33 - 04:26:33 4639
Maupin 04:11:40 -38.7 Dark Up 56.4 98.5 Up 03:56:40 - 04:26:40 4633
Madras/Culver 04:11:41 -38.8 Dark Up 56.4 97.7 Up 03:56:41 - 04:26:41 4583
Sisters 04:11:43 -38.5 Dark Up 56.1 96.8 Up 03:56:43 - 04:26:43 4567
Redmond 04:11:42 -38.8 Dark Up 56.4 97.1 Up 03:56:42 - 04:26:42 4552
Bend 04:11:43 -38.7 Dark Up 56.4 96.7 Up 03:56:43 - 04:26:43 4536
Oregon Observatory 04:11:43 -38.6 Dark Up 56.3 96.3 Up 03:56:43 - 04:26:43 4524
La Pine/Gilchrist 04:11:44 -38.6 Dark Up 56.3 95.9 Up 03:56:44 - 04:26:44 4507
North Lake 04:11:44 -39.0 Dark Up 56.7 95.8 Up 03:56:44 - 04:26:44 4446
Chiloquin 04:11:48 -38.4 Dark Up 56.1 94.0 Up 03:56:48 - 04:26:48 4415
Paisley 04:11:44 -39.3 Dark Up 57.1 95.2 Up 03:56:44 - 04:26:44 4382
Klamath Falls 04:11:48 -38.4 Dark Up 56.2 93.6 Up 03:56:48 - 04:26:48 4380
Tulelake 04:11:48 -38.7 Dark Up 56.4 93.4 Up 03:56:48 - 04:26:48 4344
Lakeview 04:11:45 -39.5 Dark Up 57.2 94.6 Up 03:56:45 - 04:26:45 4327
Cedarville 04:11:46 -39.7 Dark Up 57.4 93.7 Up 03:56:46 - 04:26:46 4258
Fall River/Burney 04:11:50 -38.8 Dark Up 56.5 92.1 Up 03:56:50 - 04:26:50 4255
Susanville 04:11:50 -39.3 Dark Up 57.1 91.6 Up 03:56:50 - 04:26:50 4168
Greenville 04:11:51 -39.1 Dark Up 56.9 91.0 Up 03:56:51 - 04:26:51 4152
Gimple 04:11:51 -39.2 Dark Up 57.0 91.1 Up 03:56:51 - 04:26:51 4149
Quincy 04:11:51 -39.1 Dark Up 56.9 90.7 Up 03:56:51 - 04:26:51 4133
Portola 04:11:51 -39.5 Dark Up 57.3 90.8 Up 03:56:51 - 04:26:51 4104
Reno 04:11:50 -40.0 Dark Up 57.8 90.8 Up 03:56:50 - 04:26:50 4055
Carson City 04:11:50 -40.0 Dark Up 57.8 90.3 Up 03:56:50 - 04:26:50 4019
Gardnerville 04:11:50 -40.1 Dark Up 57.8 89.9 Up 03:56:50 - 04:26:50 3994
Yerington 04:11:48 -40.5 Dark Up 58.3 90.4 Up 03:56:48 - 04:26:48 3978
Hawthorne 04:11:48 -40.9 Dark Up 58.7 89.9 Up 03:56:48 - 04:26:48 3914
Lee Vining 04:11:51 -40.6 Dark Up 58.3 88.7 Up 03:56:51 - 04:26:51 3876
Tonopah 04:11:46 -42.1 Dark Up 59.8 90.0 Up 03:56:46 - 04:26:46 3819
Bishop 04:11:51 -41.1 Dark Up 58.9 88.2 Up 03:56:51 - 04:26:51 3791
Lone Pine 04:11:51 -41.4 Dark Up 59.1 87.1 Up 03:56:51 - 04:26:51 3704
Beatty 04:11:47 -42.4 Dark Up 60.2 88.3 Up 03:56:47 - 04:26:47 3688
CPSLO 04:12:00 -39.3 Dark Up 56.9 83.8 Up 03:57:00 - 04:27:00 3672
Niwot 04:11:08 -51.0 Dark Up 68.7 104.1 Up 03:56:08 - 04:26:08 3657
Indian Springs 04:11:44 -43.3 Dark Up 61.0 88.3 Up 03:56:44 - 04:26:44 3618
Henderson 04:11:43 -43.9 Dark Up 61.5 87.7 Up 03:56:43 - 04:26:43 3541
Searchlight/Boulder City 04:11:44 -43.9 Dark Up 61.6 86.7 Up 03:56:44 - 04:26:44 3481
Wildwood 04:11:57 -40.9 Dark Up 58.5 82.7 Up 03:56:57 - 04:26:57 3474
Patrick 04:11:42 -44.8 Dark Up 62.4 87.1 Up 03:56:42 - 04:26:42 3439
Laughlin/Bullhead City 04:11:44 -44.2 Dark Up 61.8 86.3 Up 03:56:44 - 04:26:44 3439
Kingman/Dolan Springs 04:11:43 -44.6 Dark Up 62.3 86.6 Up 03:56:43 - 04:26:43 3423
Mohave Valley 04:11:44 -44.2 Dark Up 61.8 85.8 Up 03:56:44 - 04:26:44 3411
DCO 04:11:40 -45.4 Dark Up 63.0 86.9 Up 03:56:40 - 04:26:40 3384
Idyllwild 04:11:53 -42.5 Dark Up 60.0 82.8 Up 03:56:53 - 04:26:53 3369
Lake Havasu City 04:11:44 -44.4 Dark Up 62.0 85.2 Up 03:56:44 - 04:26:44 3362
Parker 04:11:45 -44.5 Dark Up 62.0 84.5 Up 03:56:45 - 04:26:45 3325
Blythe 04:11:47 -44.2 Dark Up 61.7 83.4 Up 03:56:47 - 04:26:47 3282
Calipatria 04:11:51 -43.4 Dark Up 60.9 82.2 Up 03:56:51 - 04:26:51 3265
Yuma 04:11:48 -44.2 Dark Up 61.5 81.7 Up 03:56:48 - 04:26:48 3189

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 04:10UT)
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 2018/02/14 17:17:15 UT

Marc W. Buie, Southwest Research Institute

RECON