RECON: TNO occultation with 499514

Event between (499514) 10OO127 and star GA1020:19113774 with event index number of 301188

Geocentric closest approach at 2020/10/07 05:28:59 UTC

J2000 position of star is 22:12:16.2 +13:32:43
Equinox of date position of star is 22:13:11.2 +13:38:18
Stellar brightness G=15.6, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=21.2

[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 213 seconds.
The 1-sigma cross-track error in the shadow position is 3841 km.
The sky-plane scale is 32176.0 km/arcsec.

The TNO has an absolute magnitude Hv=4.6
Diameter=724.5 km assuming a 5% albedo -- 33.4 sec chord
Diameter=295.8 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 499514, (2020/10/07 05:29UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:08.4 +45:21:19  1.3 37.11  94
Markab         23:05:47.8 +15:19:03  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 4.2 sigma about the mid-time.
The median site spacing is 17.1 km RECON observability=1.0 and success probability=11.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 05:26:47 -37.1 Dark Up 53.4 189.1 Up 05:11:47 - 05:41:47 -692
Penticton 05:26:49 -37.3 Dark Up 53.7 188.9 Up 05:11:49 - 05:41:49 -710
Okanagan Falls 05:26:50 -37.4 Dark Up 53.9 188.9 Up 05:11:50 - 05:41:50 -722
Southern Okanagan 05:26:50 -37.5 Dark Up 54.1 189.0 Up 05:11:50 - 05:41:50 -735
Oroville 05:26:50 -37.8 Dark Up 54.3 189.2 Up 05:11:50 - 05:41:50 -759
Tonasket 05:26:51 -37.9 Dark Up 54.5 189.3 Up 05:11:51 - 05:41:51 -776
Okanogan 05:26:52 -38.1 Dark Up 54.9 189.1 Up 05:11:52 - 05:41:52 -793
Manson/Chelan 05:26:54 -38.1 Dark Up 55.4 188.3 Up 05:11:54 - 05:41:54 -799
Brewster 05:26:53 -38.2 Dark Up 55.2 188.9 Up 05:11:53 - 05:41:53 -802
Entiat 05:26:55 -38.3 Dark Up 55.7 188.2 Up 05:11:55 - 05:41:55 -811
Wenatchee 05:26:56 -38.4 Dark Up 55.9 188.1 Up 05:11:56 - 05:41:56 -825
Ellensburg 05:26:58 -38.6 Dark Up 56.3 187.8 Up 05:11:58 - 05:41:58 -844
Yakima 05:26:59 -38.8 Dark Up 56.7 187.9 Up 05:11:59 - 05:41:59 -873
Toppenish/White Swan 05:26:59 -39.1 Dark Up 56.9 188.2 Up 05:11:59 - 05:41:59 -897
The Dalles 05:27:04 -39.2 Dark Up 57.8 187.0 Up 05:12:04 - 05:42:04 -913
Goldendale 05:27:02 -39.2 Dark Up 57.5 187.6 Up 05:12:02 - 05:42:02 -915
Maupin 05:27:04 -39.5 Dark Up 58.2 187.3 Up 05:12:04 - 05:42:04 -949
Pasco 05:26:56 -39.8 Dark Up 56.9 190.5 Up 05:11:56 - 05:41:56 -971
George/Umatilla 05:26:58 -39.9 Dark Up 57.3 190.2 Up 05:11:58 - 05:41:58 -984
Madras/Culver 05:27:06 -39.8 Dark Up 58.7 187.3 Up 05:12:06 - 05:42:06 -987
Sisters 05:27:08 -39.8 Dark Up 59.1 186.6 Up 05:12:08 - 05:42:08 -987
PNWRO 05:26:56 -40.1 Dark Up 57.1 191.0 Up 05:11:56 - 05:41:56 -1000
Redmond 05:27:07 -40.0 Dark Up 59.1 187.3 Up 05:12:07 - 05:42:07 -1010
Bend 05:27:08 -40.1 Dark Up 59.3 187.1 Up 05:12:08 - 05:42:08 -1019
Oregon Observatory 05:27:09 -40.1 Dark Up 59.5 186.9 Up 05:12:09 - 05:42:09 -1024
La Pine/Gilchrist 05:27:09 -40.2 Dark Up 59.7 186.8 Up 05:12:09 - 05:42:09 -1036
Chiloquin 05:27:14 -40.7 Dark Up 60.8 186.4 Up 05:12:14 - 05:42:14 -1099
North Lake 05:27:09 -40.8 Dark Up 60.1 188.1 Up 05:12:09 - 05:42:09 -1101
Klamath Falls 05:27:15 -41.0 Dark Up 61.2 186.6 Up 05:12:15 - 05:42:15 -1130
Paisley 05:27:10 -41.4 Dark Up 60.6 189.0 Up 05:12:10 - 05:42:10 -1162
Tulelake 05:27:14 -41.3 Dark Up 61.4 187.3 Up 05:12:14 - 05:42:14 -1166
Lakeview 05:27:11 -41.8 Dark Up 61.1 189.5 Up 05:12:11 - 05:42:11 -1211
Fall River/Burney 05:27:17 -41.9 Dark Up 62.3 187.7 Up 05:12:17 - 05:42:17 -1239
Cedarville 05:27:12 -42.3 Dark Up 61.7 190.1 Up 05:12:12 - 05:42:12 -1270
Susanville 05:27:16 -42.8 Dark Up 62.9 189.5 Up 05:12:16 - 05:42:16 -1329
Greenville 05:27:18 -42.7 Dark Up 63.2 188.9 Up 05:12:18 - 05:42:18 -1333
Gimple 05:27:18 -42.8 Dark Up 63.2 189.1 Up 05:12:18 - 05:42:18 -1338
Quincy 05:27:19 -42.9 Dark Up 63.4 189.0 Up 05:12:19 - 05:42:19 -1349
Portola 05:27:18 -43.2 Dark Up 63.4 190.1 Up 05:12:18 - 05:42:18 -1386
Reno 05:27:16 -43.8 Dark Up 63.6 191.6 Up 05:12:16 - 05:42:16 -1443
Carson City 05:27:18 -44.0 Dark Up 63.9 191.8 Up 05:12:18 - 05:42:18 -1472
Gardnerville 05:27:18 -44.2 Dark Up 64.2 192.0 Up 05:12:18 - 05:42:18 -1494
Yerington 05:27:16 -44.5 Dark Up 64.0 193.2 Up 05:12:16 - 05:42:16 -1523
Hawthorne 05:27:16 -45.1 Dark Up 64.4 194.6 Up 05:12:16 - 05:42:16 -1591
Lee Vining 05:27:19 -45.2 Dark Up 65.0 193.8 Up 05:12:19 - 05:42:19 -1607
Bishop 05:27:18 -46.0 Dark Up 65.4 195.8 Up 05:12:18 - 05:42:18 -1696
Tonopah 05:27:13 -46.3 Dark Up 64.5 198.0 Up 05:12:13 - 05:42:13 -1708
CPSLO 05:27:32 -45.8 Dark Up 67.9 191.6 Up 05:12:32 - 05:42:32 -1726
Lone Pine 05:27:20 -46.7 Dark Up 66.1 197.1 Up 05:12:20 - 05:42:20 -1777
Beatty 05:27:15 -47.3 Dark Up 65.5 199.8 Up 05:12:15 - 05:42:15 -1828
Indian Springs 05:27:13 -48.2 Dark Up 65.5 202.5 Up 05:12:13 - 05:42:13 -1917
Wildwood 05:27:28 -47.8 Dark Up 68.6 197.6 Up 05:12:28 - 05:42:28 -1948
Henderson 05:27:12 -49.0 Dark Up 65.8 204.5 Up 05:12:12 - 05:42:12 -2001
Searchlight/Boulder City 05:27:13 -49.4 Dark Up 66.3 205.2 Up 05:12:13 - 05:42:13 -2052
Idyllwild 05:27:24 -49.3 Dark Up 68.4 202.7 Up 05:12:24 - 05:42:24 -2091
Laughlin/Bullhead City 05:27:12 -49.8 Dark Up 66.4 206.2 Up 05:12:12 - 05:42:12 -2097
Patrick 05:27:10 -50.1 Dark Up 65.9 207.5 Up 05:12:10 - 05:42:10 -2117
Mohave Valley 05:27:14 -50.0 Dark Up 66.6 206.5 Up 05:12:14 - 05:42:14 -2120
Kingman/Dolan Springs 05:27:12 -50.1 Dark Up 66.2 207.4 Up 05:12:12 - 05:42:12 -2125
Lake Havasu City 05:27:14 -50.4 Dark Up 66.9 207.5 Up 05:12:14 - 05:42:14 -2168
Niwot 05:26:32 -51.0 Dark Up 58.3 218.6 Up 05:11:32 - 05:41:32 -2177
DCO 05:27:09 -50.7 Dark Up 65.9 209.4 Up 05:12:09 - 05:42:09 -2184
Parker 05:27:15 -50.6 Dark Up 67.2 208.0 Up 05:12:15 - 05:42:15 -2199
Calipatria 05:27:21 -50.5 Dark Up 68.6 206.3 Up 05:12:21 - 05:42:21 -2212
Blythe 05:27:18 -50.8 Dark Up 67.8 207.9 Up 05:12:18 - 05:42:18 -2226
Yuma 05:27:20 -51.3 Dark Up 68.6 208.9 Up 05:12:20 - 05:42:20 -2302

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 05:29UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 37.11  94
Markab         23:04:45.7 +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 2018/10/08 19:51:15 UT

Marc W. Buie, Southwest Research Institute

RECON