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    • MPEC 2019-H99 : 2019 HA4

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    M.P.E.C. 2019-H99                                Issued 2019 Apr. 29, 17:54 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2019 HA4

Observations:
     K19H04A  C2019 04 27.35204015 01 58.642+26 05 51.10         19.7 G EH099F51
     K19H04A  C2019 04 27.37524615 02 04.685+26 10 41.52         19.4 G EH099F51
     K19H04A* C2019 04 28.35749 15 06 51.35 +28 51 34.7          20.3 GVEH099703
     K19H04A  C2019 04 28.36276 15 06 52.32 +28 52 15.9          19.7 GVEH099703
     K19H04A  C2019 04 28.36803 15 06 53.00 +28 52 59.7          20.5 GVEH099703
     K19H04A  C2019 04 28.37330 15 06 53.82 +28 53 40.6          21.1 GVEH099703
     K19H04A  C2019 04 28.43928 15 07 04.97 +29 02 07.5          21.1 GVEH099I52
     K19H04A  C2019 04 28.44025 15 07 05.15 +29 02 14.9          20.6 GVEH099I52
     K19H04A  C2019 04 28.44122 15 07 05.31 +29 02 21.9          21.3 GVEH099I52
     K19H04A  C2019 04 28.44219 15 07 05.48 +29 02 29.6          20.2 GVEH099I52
     K19H04A  C2019 04 28.44660115 07 05.75 +29 02 52.6          20.1 GVEH099H01
     K19H04A  C2019 04 28.45295015 07 06.92 +29 03 39.6          20.8 GVEH099H01
     K19H04A  C2019 04 28.45982515 07 08.19 +29 04 30.3          20.4 GVEH099H01
     K19H04A  C2019 04 28.46757515 07 09.65 +29 05 27.0          20.0 GVEH099H01
     K19H04A  C2019 04 29.21359 15 10 14.50 +30 30 21.6          20.6 GVEH099I52
     K19H04A  C2019 04 29.21525 15 10 14.73 +30 30 32.2          20.5 GVEH099I52
     K19H04A  C2019 04 29.21691 15 10 14.95 +30 30 42.7          20.9 GVEH099I52
     K19H04A  C2019 04 29.21857 15 10 15.17 +30 30 53.2          20.6 GVEH099I52
     K19H04A  C2019 04 29.21880515 10 14.44 +30 30 53.4          20.1 GVEH099H01
     K19H04A  C2019 04 29.22441915 10 15.18 +30 31 28.7          20.1 GVEH099H01
     K19H04A  C2019 04 29.23227815 10 16.18 +30 32 17.8          20.2 GVEH099H01
     K19H04A  C2019 04 29.24143115 10 17.34 +30 33 14.9          20.7 GVEH099H01

Observer details:
703 Catalina Sky Survey.  Observer D. C. Fuls.  Measurers B. M. Africano,
    E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne,
    D. Rankin, R. L. Seaman, F. C. Shelly.  0.68-m Schmidt + 10K CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers D. C. Fuls,
    H. Groeller.  Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman,
    F. C. Shelly.  1.0-m reflector + CCD.

Orbital elements:
2019 HA4                                                 Earth MOID = 0.0088 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  40.05491              (2000.0)            P               Q
n   0.71807317     Peri.  296.61698     -0.83779803     -0.51641221
a   1.2350662      Node   213.17143     +0.53984902     -0.83204021
e   0.2756009      Incl.   18.90074     -0.08159346     -0.20255252
P   1.37           H   26.0           G   0.15           U   8
Residuals in seconds of arc
190428 703  0.1+  0.1-    190428 I52  0.2-  0.3+    190429 I52  0.1-  0.1-
190428 703  1.6+  1.0-    190428 H01  0.1+  0.0     190429 I52  0.1-  0.1-
190428 703  0.6-  0.9+    190428 H01  0.2+  0.0     190429 H01  0.0   0.1+
190428 703  1.1-  0.1+    190428 H01  0.1+  0.0     190429 H01  0.1+  0.1+
190428 I52  0.2-  0.1-    190428 H01  0.1+  0.1-    190429 H01  0.0   0.1-
190428 I52  0.0   0.1+    190429 I52  0.1-  0.0     190429 H01  0.2+  0.1+
190428 I52  0.2-  0.2-    190429 I52  0.1-  0.0

Ephemeris:
2019 HA4                 a,e,i = 1.24, 0.28, 19                  q = 0.8947
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2019 03 30    03 34 40.9 -42 19 19   0.1646  0.9316    61.6   109.4    26.1
...
2019 04 14    03 54 42.1 -47 49 44   0.06342 0.9783    65.6   111.0    24.2
...
2019 04 22    08 59 25.3 -69 59 35   0.01159 1.0083   106.5    72.8    18.9
...
2019 04 28    15 05 15.9 +28 00 14   0.03508 1.0324   136.6    42.0    20.4
2019 04 29    15 09 21.7 +30 08 47   0.04184 1.0365   134.3    44.1    20.9
2019 04 30    15 12 23.5 +31 39 59   0.04866 1.0407   132.5    45.5    21.3
...
2019 05 06    15 20 57.3 +35 33 38   0.09005 1.0660   127.6    48.6    22.7
...
2019 05 14    15 24 27.9 +36 27 30   0.1458  1.1008   125.1    48.7    23.9
...
2019 05 29    15 27 23.1 +34 46 59   0.2512  1.1672   122.3    47.2    25.1

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-H99

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