RECON: TNO occultation with 202421

Event between (202421) 05UQ513 and star UC4-616-002248 with event index number of 154989

Geocentric closest approach at 2018/10/27 07:52:55 UTC

J2000 position of star is 00:47:22.1 +33:07:02
Equinox of date position of star is 00:48:17.6 +33:12:36
Stellar brightness R=12.3, use SENSEUP=16
Star is 51 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=20.2

[RECON map]
TNO is 48.0 AU from the Sun and 47.2 AU from the Earth.
The TNO is moving 25.6 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 127 seconds.
The 1-sigma cross-track error in the shadow position is 2557 km.
The sky-plane scale is 34202.4 km/arcsec.

The TNO has an absolute magnitude Hv=3.4
Diameter=1259.0 km assuming a 5% albedo -- 49.2 sec chord
Diameter=514.0 km assuming a 30% albedo -- 20.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 202421, (2018/10/27 07:53UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.4 +45:20:54  1.3 47.97  94
57Gam1And      02:05:03.8 +42:25:09  2.3 17.66  39
31Del And      00:40:20.4 +30:57:49  3.3  2.83  52
PPM 065648     00:49:56.0 +33:01:37  8.0  0.38  50
PPM 065633     00:49:01.9 +33:18:53 10.7  0.16  51
202421         00:48:23.4 +33:13:11 12.3        51
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 5.0 sigma about the mid-time.
The median site spacing is 24.8 km RECON observability=1.0 and success probability=1.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:51:24 -53.8 Dark Up 67.1 234.5 Up 07:40:19 - 08:02:29 -8018
Tonasket 07:51:24 -54.0 Dark Up 67.3 235.0 Up 07:40:19 - 08:02:29 -8043
Okanogan 07:51:25 -54.4 Dark Up 67.5 235.4 Up 07:40:20 - 08:02:30 -8075
Brewster 07:51:26 -54.7 Dark Up 67.8 235.6 Up 07:40:21 - 08:02:31 -8100
Manson/Chelan 07:51:26 -54.9 Dark Up 68.1 235.4 Up 07:40:21 - 08:02:31 -8114
Entiat 07:51:27 -55.1 Dark Up 68.3 235.7 Up 07:40:22 - 08:02:32 -8136
Wenatchee 07:51:28 -55.4 Dark Up 68.5 236.1 Up 07:40:23 - 08:02:33 -8161
Ellensburg 07:51:28 -55.8 Dark Up 68.8 236.6 Up 07:40:23 - 08:02:33 -8200
Yakima 07:51:29 -56.2 Dark Up 69.1 237.5 Up 07:40:24 - 08:02:34 -8243
Toppenish/White Swan 07:51:29 -56.4 Dark Up 69.1 238.2 Up 07:40:24 - 08:02:34 -8269
Pasco 07:51:26 -56.5 Dark Up 68.4 240.6 Up 07:40:21 - 08:02:31 -8309
Goldendale 07:51:30 -57.0 Dark Up 69.6 238.8 Up 07:40:25 - 08:02:35 -8318
The Dalles 07:51:32 -57.2 Dark Up 69.9 238.7 Up 07:40:27 - 08:02:37 -8334
George/Umatilla 07:51:26 -56.8 Dark Up 68.7 241.0 Up 07:40:21 - 08:02:31 -8340
PNWRO 07:51:25 -56.7 Dark Up 68.4 241.5 Up 07:40:20 - 08:02:30 -8341
Maupin 07:51:32 -57.6 Dark Up 70.1 239.9 Up 07:40:27 - 08:02:37 -8381
Madras/Culver 07:51:33 -58.2 Dark Up 70.4 241.1 Up 07:40:28 - 08:02:38 -8438
Sisters 07:51:33 -58.5 Dark Up 70.8 241.2 Up 07:40:28 - 08:02:38 -8462
Redmond 07:51:32 -58.5 Dark Up 70.6 241.9 Up 07:40:27 - 08:02:37 -8474
Bend 07:51:33 -58.7 Dark Up 70.8 242.2 Up 07:40:28 - 08:02:38 -8494
Oregon Observatory 07:51:34 -58.9 Dark Up 70.9 242.5 Up 07:40:29 - 08:02:39 -8509
La Pine/Gilchrist 07:51:34 -59.1 Dark Up 71.1 242.9 Up 07:40:29 - 08:02:39 -8529
North Lake 07:51:33 -59.5 Dark Up 70.9 245.0 Up 07:40:28 - 08:02:38 -8590
Chiloquin 07:51:37 -60.2 Dark Up 71.8 245.3 Up 07:40:32 - 08:02:42 -8638
Paisley 07:51:33 -60.1 Dark Up 70.8 247.0 Up 07:40:28 - 08:02:38 -8657
Klamath Falls 07:51:37 -60.6 Dark Up 71.9 246.4 Up 07:40:32 - 08:02:42 -8677
Tulelake 07:51:37 -60.8 Dark Up 71.8 247.6 Up 07:40:32 - 08:02:42 -8713
Lakeview 07:51:33 -60.6 Dark Up 70.9 248.6 Up 07:40:28 - 08:02:38 -8715
Cedarville 07:51:33 -61.2 Dark Up 71.0 250.7 Up 07:40:28 - 08:02:38 -8789
Fall River/Burney 07:51:37 -61.7 Dark Up 72.0 250.3 Up 07:40:32 - 08:02:42 -8811
Susanville 07:51:36 -62.4 Dark Up 71.7 253.2 Up 07:40:31 - 08:02:41 -8897
Greenville 07:51:37 -62.6 Dark Up 72.0 253.6 Up 07:40:32 - 08:02:42 -8919
Gimple 07:51:37 -62.6 Dark Up 71.9 253.7 Up 07:40:32 - 08:02:42 -8921
Quincy 07:51:37 -62.8 Dark Up 72.0 254.2 Up 07:40:32 - 08:02:42 -8940
Portola 07:51:36 -63.0 Dark Up 71.7 255.2 Up 07:40:31 - 08:02:41 -8965
Reno 07:51:34 -63.2 Dark Up 71.3 256.7 Up 07:40:29 - 08:02:39 -9009
Carson City 07:51:35 -63.5 Dark Up 71.4 257.8 Up 07:40:30 - 08:02:40 -9048
Gardnerville 07:51:35 -63.8 Dark Up 71.4 258.6 Up 07:40:30 - 08:02:40 -9075
Yerington 07:51:33 -63.7 Dark Up 70.9 259.0 Up 07:40:28 - 08:02:38 -9084
Hawthorne 07:51:32 -64.1 Dark Up 70.6 260.9 Up 07:40:27 - 08:02:37 -9146
Lee Vining 07:51:33 -64.7 Dark Up 71.1 262.0 Up 07:40:28 - 08:02:38 -9195
Niwot 07:50:51 -59.0 Dark Up 60.2 268.1 Up 07:39:46 - 08:01:56 -9196
Tonopah 07:51:28 -64.4 Dark Up 69.6 263.4 Up 07:40:23 - 08:02:33 -9228
Bishop 07:51:33 -65.2 Dark Up 70.6 264.4 Up 07:40:28 - 08:02:38 -9276
Beatty 07:51:28 -65.5 Dark Up 69.3 266.9 Up 07:40:23 - 08:02:33 -9362
Lone Pine 07:51:33 -65.9 Dark Up 70.4 266.8 Up 07:40:28 - 08:02:38 -9365
Indian Springs 07:51:25 -65.6 Dark Up 68.5 268.5 Up 07:40:20 - 08:02:30 -9421
CPSLO 07:51:42 -67.5 Dark Up 72.5 268.9 Up 07:40:37 - 08:02:47 -9439
Henderson 07:51:23 -65.9 Dark Up 67.9 270.2 Up 07:40:18 - 08:02:28 -9492
Searchlight/Boulder City 07:51:24 -66.5 Dark Up 67.9 271.7 Up 07:40:19 - 08:02:29 -9555
Patrick 07:51:20 -66.3 Dark Up 67.0 272.3 Up 07:40:15 - 08:02:25 -9582
Laughlin/Bullhead City 07:51:22 -66.7 Dark Up 67.6 272.6 Up 07:40:17 - 08:02:27 -9594
Kingman/Dolan Springs 07:51:21 -66.5 Dark Up 67.2 272.8 Up 07:40:16 - 08:02:26 -9602
Wildwood 07:51:37 -68.5 Dark Up 70.8 273.6 Up 07:40:32 - 08:02:42 -9620
Mohave Valley 07:51:24 -66.9 Dark Up 67.6 273.2 Up 07:40:19 - 08:02:29 -9624
DCO 07:51:20 -66.3 Dark Up 66.4 273.4 Up 07:40:15 - 08:02:25 -9629
Lake Havasu City 07:51:23 -67.2 Dark Up 67.3 274.3 Up 07:40:18 - 08:02:28 -9672
Idyllwild 07:51:31 -68.5 Dark Up 69.2 275.3 Up 07:40:26 - 08:02:36 -9702
Parker 07:51:24 -67.6 Dark Up 67.3 275.1 Up 07:40:19 - 08:02:29 -9710
Blythe 07:51:24 -68.1 Dark Up 67.5 276.3 Up 07:40:19 - 08:02:29 -9760
Calipatria 07:51:28 -68.9 Dark Up 68.2 277.2 Up 07:40:23 - 08:02:33 -9793
Yuma 07:51:26 -69.0 Dark Up 67.4 278.5 Up 07:40:21 - 08:02:31 -9859

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 202421, (2018/10/27 07:53UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 47.97  94
57Gam1And      02:03:54.0 +42:19:46  2.3 17.66  39
31Del And      00:39:19.9 +30:51:38  3.3  2.83  52
PPM 065648     00:48:54.6 +32:55:28  8.0  0.38  50
PPM 065633     00:48:00.6 +33:12:45 10.7  0.16  51
202421         00:47:22.1 +33:07:02 12.3        51
Positions are for J2000

Event circumstances last updated at 2017/01/21 18:05:39 UT

Marc W. Buie, Southwest Research Institute

RECON