Appulses between asteroids

We have processed the data from the Minor Planet Centre looking for close approaches between any of the first 25,000 objects (and also including 134340 Pluto). The following table lists approaches closer than 0.3° for which both objects are brighter than magnitude 15 and which have an elongation of at least 120° from the Sun.

The selection criteria are wider than previously. This has been agreed with the Asteroid and Remote Planets Section. Their web site will give more details of planned projects based on some of these appulses.

Photographers may be pleased to get 2 trails for the price of one. There could be scientific value in comparing the magnitudes and colours of the pair of objects as they move (and tumble) along. Being so close, the light from both will suffer almost identical atmospheric and optical effects and so should be comparable. Cases where the brightnesses differ by more than a factor of 10 (magnitude difference greater than 2.5) are not likely to yield useful results.

NB: Data are given for 0h on each date. The objects may pass closer.

The W (window) column shows the number of days for which the separation is less than 0.3°. This gives some clue as to how the orbits lie in relation to each other.

Date +
chart link
JDSep
°
W
d
Sun elong
°
------Names------MagRA
J2000
Dec
J2000
2019-05-092458612.50.19492546 Herodias
628 Christine
14.3
14.4
09h44m22.41s
09h43m41.24s
+24d08m37.2s
+24d02m20.6s
2019-05-132458616.50.1911112158 Koronis
351 Yrsa
14.5
14.4
19h50m39.11s
19h49m56.43s
-21d00m05.5s
-20d54m36.1s
2019-05-182458621.50.055103618 Elfriede
142 Polana
13.7
14.4
20h51m54.96s
20h52m08.07s
-17d56m19.3s
-17d55m48.1s
2019-05-202458623.50.243165292 Ludovica
1068 Nofretete
13.2
14.2
16h13m12.72s
16h12m11.83s
-29d54m47.6s
-29d49m48.9s
2019-05-262458629.50.166166953 Painleva
1682 Karel
13.0
15.1
16h13m45.86s
16h13m06.75s
-28d40m48.0s
-28d45m42.1s
2019-06-022458636.50.125122149 Medusa
3578 Carestia
14.5
14.7
20h25m33.78s
20h25m08.50s
-18d01m49.6s
-18d05m43.2s
2019-06-032458637.50.1541584628 Laplace
1119 Euboea
14.7
14.0
17h36m55.50s
17h36m18.36s
-28d31m52.8s
-28d35m05.3s
2019-06-122458646.50.19101561001 Gaussia
1487 Boda
14.6
15.0
17h35m51.20s
17h36m37.86s
-22d22m30.9s
-22d25m20.9s
2019-06-242458658.50.075138618 Elfriede
1430 Somalia
13.1
15.0
20h56m38.26s
20h56m26.86s
-20d42m39.0s
-20d39m16.0s
2019-06-252458659.50.212150410 Chloris
1490 Limpopo
10.5
14.7
17h21m56.57s
17h22m41.74s
-19d21m40.4s
-19d14m50.0s
2019-07-032458667.50.205128145 Adeona
685 Hermia
12.8
14.7
15h34m06.56s
15h33m21.15s
-16d48m13.1s
-16d42m59.5s
2019-07-042458668.50.0941542763 Jeans
2906 Caltech
14.8
14.9
17h31m02.94s
17h30m42.32s
-27d13m59.0s
-27d10m58.8s
2019-07-082458672.50.1531582064 Thomsen
9992 1997 TG19
12.6
14.8
18h07m19.15s
18h08m01.89s
-29d47m41.2s
-29d47m03.3s
2019-07-092458673.50.1521421103 Sequoia
1114 Lorraine
13.7
14.6
19h33m27.46s
19h33m00.71s
-06d02m14.3s
-05d55m48.3s
2019-07-162458680.50.21414118 Melpomene
713 Luscinia
9.3
13.7
18h23m41.97s
18h23m09.96s
-10d03m23.6s
-09d53m23.1s
2019-07-222458686.50.09121572158 Tietjen
2365 Interkosmos
14.7
15.0
20h10m57.62s
20h11m10.39s
-17d31m53.1s
-17d27m11.1s

Section Director
Steve Harvey

Section Director, Steve Harvey

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