RECON: TNO occultation with 499514

Event between (499514) 10OO127 and star GA1020:19113774 with event index number of 357372

Geocentric closest approach at 2020/10/07 05:38:59 UTC

J2000 position of star is 22:12:16.2 +13:32:43
Equinox of date position of star is 22:13:16.8 +13:38:52
Stellar brightness G=15.6, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=26.6

[RECON map]
TNO is 45.1 AU from the Sun and 44.4 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 84 seconds.
The 1-sigma cross-track error in the shadow position is 1854 km.
The sky-plane scale is 32174.2 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=724.5 km assuming a 5% albedo -- 2.8 sec chord
Diameter=295.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 499514, (2020/10/07 05:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:08.4 +45:21:19  1.3 37.11  94
Markab         23:05:47.8 +15:19:02  2.5 12.82  80
PPM 141171     22:12:51.6 +16:08:37  6.5  2.50  92
PPM 141135     22:11:20.2 +13:51:05  8.4  0.51  93
PPM 141161     22:12:25.1 +13:32:54 10.0  0.23  93
499514         22:13:17.1 +13:38:54 15.6        92
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 19.8 km RECON observability=1.0 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 05:36:58 -37.3 Dark Up 54.9 186.9 Up 05:29:30 - 05:44:25 5922
Clarence Fulton 05:36:43 -38.0 Dark Up 52.7 193.1 Up 05:29:15 - 05:44:10 5851
Peachland 05:36:45 -38.2 Dark Up 53.3 192.6 Up 05:29:18 - 05:44:13 5835
Kelowna 05:36:44 -38.2 Dark Up 53.1 193.0 Up 05:29:17 - 05:44:12 5830
Summerland 05:36:45 -38.3 Dark Up 53.4 192.8 Up 05:29:17 - 05:44:12 5820
Penticton 05:36:45 -38.4 Dark Up 53.4 193.0 Up 05:29:18 - 05:44:13 5810
Oliver 05:36:46 -38.7 Dark Up 53.8 193.1 Up 05:29:19 - 05:44:14 5784
Anarchist Mountain Observatory 05:36:46 -38.9 Dark Up 53.9 193.4 Up 05:29:19 - 05:44:14 5762
Tonasket 05:36:46 -39.1 Dark Up 54.2 193.4 Up 05:29:19 - 05:44:14 5742
Okanogan 05:36:48 -39.2 Dark Up 54.6 193.3 Up 05:29:21 - 05:44:16 5724
Manson/Chelan 05:36:51 -39.3 Dark Up 55.1 192.5 Up 05:29:23 - 05:44:18 5716
Brewster 05:36:49 -39.4 Dark Up 54.9 193.1 Up 05:29:22 - 05:44:17 5714
Entiat 05:36:52 -39.5 Dark Up 55.3 192.5 Up 05:29:24 - 05:44:19 5703
Wenatchee 05:36:52 -39.6 Dark Up 55.6 192.4 Up 05:29:24 - 05:44:19 5689
Ellensburg 05:36:54 -39.8 Dark Up 56.0 192.1 Up 05:29:27 - 05:44:22 5669
Yakima 05:36:55 -40.1 Dark Up 56.4 192.3 Up 05:29:28 - 05:44:23 5639
Toppenish/White Swan 05:36:55 -40.3 Dark Up 56.6 192.6 Up 05:29:28 - 05:44:23 5615
The Dalles 05:37:00 -40.5 Dark Up 57.5 191.5 Up 05:29:32 - 05:44:27 5597
Goldendale 05:36:58 -40.5 Dark Up 57.2 192.1 Up 05:29:30 - 05:44:25 5595
Maupin 05:37:00 -40.8 Dark Up 57.9 191.8 Up 05:29:33 - 05:44:28 5559
Pasco 05:36:52 -41.0 Dark Up 56.5 194.9 Up 05:29:25 - 05:44:20 5542
Sisters 05:37:04 -41.1 Dark Up 58.8 191.2 Up 05:29:36 - 05:44:31 5519
PNWRO 05:36:52 -41.3 Dark Up 56.7 195.4 Up 05:29:24 - 05:44:19 5512
Redmond 05:37:03 -41.4 Dark Up 58.8 192.0 Up 05:29:35 - 05:44:30 5496
Bend 05:37:03 -41.4 Dark Up 59.0 191.8 Up 05:29:36 - 05:44:31 5488
Oregon Observatory 05:37:04 -41.5 Dark Up 59.2 191.6 Up 05:29:36 - 05:44:31 5481
La Pine/Gilchrist 05:37:05 -41.6 Dark Up 59.4 191.6 Up 05:29:38 - 05:44:33 5469
North Lake 05:37:05 -42.2 Dark Up 59.8 192.9 Up 05:29:38 - 05:44:33 5403
Klamath Falls 05:37:10 -42.4 Dark Up 60.9 191.6 Up 05:29:43 - 05:44:38 5372
Paisley 05:37:05 -42.8 Dark Up 60.2 193.8 Up 05:29:38 - 05:44:33 5342
Lakeview 05:37:06 -43.2 Dark Up 60.7 194.4 Up 05:29:39 - 05:44:34 5292
Fall River/Burney 05:37:12 -43.4 Dark Up 62.0 192.8 Up 05:29:44 - 05:44:39 5260
Cedarville 05:37:08 -43.8 Dark Up 61.3 195.1 Up 05:29:41 - 05:44:36 5231
Susanville 05:37:12 -44.2 Dark Up 62.5 194.7 Up 05:29:44 - 05:44:39 5170
Greenville 05:37:14 -44.2 Dark Up 62.8 194.2 Up 05:29:46 - 05:44:41 5165
Gimple 05:37:13 -44.3 Dark Up 62.8 194.4 Up 05:29:46 - 05:44:41 5160
Quincy 05:37:14 -44.4 Dark Up 63.0 194.3 Up 05:29:47 - 05:44:42 5149
Portola 05:37:14 -44.7 Dark Up 63.0 195.4 Up 05:29:46 - 05:44:41 5112
Reno 05:37:12 -45.3 Dark Up 63.1 196.8 Up 05:29:44 - 05:44:39 5055
Carson City 05:37:13 -45.5 Dark Up 63.5 197.1 Up 05:29:45 - 05:44:40 5025
Gardnerville 05:37:13 -45.7 Dark Up 63.7 197.4 Up 05:29:46 - 05:44:41 5003
Yerington 05:37:11 -46.0 Dark Up 63.5 198.6 Up 05:29:44 - 05:44:39 4974
Hawthorne 05:37:11 -46.6 Dark Up 63.8 200.0 Up 05:29:44 - 05:44:39 4907
Lee Vining 05:37:15 -46.7 Dark Up 64.5 199.4 Up 05:29:47 - 05:44:42 4888
Bishop 05:37:13 -47.5 Dark Up 64.8 201.4 Up 05:29:46 - 05:44:41 4799
Tonopah 05:37:07 -47.8 Dark Up 63.8 203.3 Up 05:29:40 - 05:44:35 4789
CPSLO 05:37:26 -47.4 Dark Up 67.4 197.8 Up 05:29:58 - 05:44:53 4762
Beatty 05:37:09 -48.8 Dark Up 64.7 205.3 Up 05:29:42 - 05:44:37 4668
Indian Springs 05:37:07 -49.7 Dark Up 64.6 207.8 Up 05:29:40 - 05:44:35 4579
Wildwood 05:37:24 -49.5 Dark Up 67.9 203.9 Up 05:29:56 - 05:44:51 4541
Henderson 05:37:07 -50.5 Dark Up 64.8 209.8 Up 05:29:39 - 05:44:34 4495
Searchlight/Boulder City 05:37:09 -50.9 Dark Up 65.3 210.6 Up 05:29:42 - 05:44:37 4443
Idyllwild 05:37:18 -50.9 Dark Up 67.5 208.7 Up 05:29:51 - 05:44:46 4400
Laughlin/Bullhead City 05:37:08 -51.3 Dark Up 65.4 211.6 Up 05:29:40 - 05:44:35 4398
Patrick 05:37:07 -51.5 Dark Up 64.9 212.8 Up 05:29:40 - 05:44:35 4379
Mohave Valley 05:37:09 -51.5 Dark Up 65.6 212.0 Up 05:29:41 - 05:44:36 4374
Kingman/Dolan Springs 05:37:07 -51.6 Dark Up 65.2 212.7 Up 05:29:39 - 05:44:34 4370
Niwot 05:36:27 -52.0 Dark Up 57.1 222.5 Up 05:29:00 - 05:43:55 4339
SwRI 05:36:28 -52.0 Dark Up 57.2 222.5 Up 05:29:01 - 05:43:56 4334
Lake Havasu City 05:37:08 -51.9 Dark Up 65.9 213.0 Up 05:29:41 - 05:44:36 4326
DCO 05:37:04 -52.2 Dark Up 64.8 214.6 Up 05:29:36 - 05:44:31 4313
Parker 05:37:10 -52.2 Dark Up 66.1 213.5 Up 05:29:42 - 05:44:37 4294
Calipatria 05:37:17 -52.1 Dark Up 67.5 212.1 Up 05:29:49 - 05:44:44 4279
Blythe 05:37:13 -52.3 Dark Up 66.7 213.5 Up 05:29:46 - 05:44:41 4266
Yuma 05:37:15 -52.9 Dark Up 67.5 214.7 Up 05:29:47 - 05:44:42 4189
George/Scottsdale 05:37:04 -53.9 Dark Up 65.3 219.0 Up 05:29:36 - 05:44:31 4119

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 499514, (2020/10/07 05:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 37.11  94
Markab         23:04:45.8 +15:12:18  2.5 12.82  80
PPM 141171     22:11:51.3 +16:02:26  6.5  2.50  92
PPM 141135     22:10:19.5 +13:44:55  8.4  0.51  93
PPM 141161     22:11:24.3 +13:26:43 10.0  0.23  93
499514         22:12:16.2 +13:32:43 15.6        93
Positions are for J2000

Event circumstances last updated at 2020/08/28 21:32:55 UT

Marc W. Buie, Southwest Research Institute

RECON