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  • MPEC 2021-E131 : 2021 EB4

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    M.P.E.C. 2021-E131                               Issued 2021 March 13, 03:28 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
    
                                    2021 EB4                                 
    
    
    Observations:
         K21E04B* C2021 03 11.28083310 53 54.29 -05 44 11.1          18.56GVEE131703
         K21E04B  C2021 03 11.28617310 53 50.49 -05 42 36.8          18.55GVEE131703
         K21E04B  C2021 03 11.29151010 53 46.70 -05 41 01.9                VEE131703
         K21E04B  C2021 03 11.29684610 53 42.79 -05 39 28.4          18.56GVEE131703
         K21E04B  C2021 03 11.41025010 52 26.11 -05 04 06.8          18.5 GVEE131474
         K21E04B  C2021 03 11.41163810 52 25.10 -05 03 41.9          18.6 GVEE131474
         K21E04B  C2021 03 11.41364510 52 23.64 -05 03 05.6          18.5 GVEE131474
         K21E04B  C2021 03 11.41565210 52 22.21 -05 02 29.3          18.2 GVEE131474
         K21E04B KC2021 03 11.42631410 52 09.33 -05 00 50.4          18.16GVEE131I52
         K21E04B KC2021 03 11.42670810 52 09.03 -05 00 43.6          18.22GVEE131I52
         K21E04B KC2021 03 11.42710010 52 08.75 -05 00 36.8          18.01GVEE131I52
         K21E04B  C2021 03 11.51707710 51 07.88 -04 31 38.3          18.4 GVEE131474
         K21E04B  C2021 03 11.51908410 51 06.40 -04 31 01.3          18.3 GVEE131474
         K21E04B  C2021 03 11.52109110 51 04.93 -04 30 24.3          18.7 GVEE131474
         K21E04B KC2021 03 11.76034610 48 13.95 -03 16 47.4          18.2 GVEE131L34
         K21E04B KC2021 03 11.77945610 47 59.38 -03 10 38.7          17.8 GVEE131L34
         K21E04B KC2021 03 11.81209710 47 34.32 -03 00 04.8          19.4 GVEE131L34
         K21E04B KC2021 03 11.81714 10 47 25.86 -02 58 39.1          18.8 GVEE131N82
         K21E04B KC2021 03 11.82227 10 47 21.89 -02 56 58.2          18.4 GVEE131N82
         K21E04B KC2021 03 11.82752 10 47 17.85 -02 55 15.7          19.2 GVEE131N82
         K21E04B KC2021 03 11.83380810 47 17.46 -02 53 01.0          19.3 GVEE131L34
         K21E04B 1C2021 03 11.90400 10 46 22.25 -02 30 10.8          18.4 VVEE131033
         K21E04B 1C2021 03 11.90434 10 46 21.97 -02 30 04.4          18.9 VVEE131033
         K21E04B 1C2021 03 11.90468 10 46 21.68 -02 29 57.2          19.5 VVEE131033
         K21E04B KC2021 03 11.91347110 46 15.50 -02 27 03.2          18.4 GVEE131J95
         K21E04B KC2021 03 11.91356610 46 15.32 -02 27 01.3          19.0 GVEE131Z80
         K21E04B KC2021 03 11.91547210 46 13.91 -02 26 23.2          18.2 GVEE131J95
         K21E04B KC2021 03 11.91746210 46 12.36 -02 25 44.3          18.2 GVEE131J95
         K21E04B KC2021 03 11.91928610 46 10.93 -02 25 07.6          18.5 GVEE131J95
         K21E04B KC2021 03 11.92051010 46 09.91 -02 24 43.2          18.6 GVEE131Z80
         K21E04B KC2021 03 11.92745510 46 04.43 -02 22 25.0          18.1 GVEE131Z80
         K21E04B KC2021 03 12.05490 10 44 21.86 -01 39 29.0                VEE131204
         K21E04B KC2021 03 12.06540 10 44 13.37 -01 35 54.5          18.6 GVEE131204
         K21E04B  C2021 03 12.38593110 39 58.47 +00 18 36.8          18.5 GVEE131474
         K21E04B  C2021 03 12.38793910 39 56.75 +00 19 20.8          18.3 GVEE131474
         K21E04B  C2021 03 12.38994610 39 55.04 +00 20 04.3          18.2 GVEE131474
         K21E04B KC2021 03 12.78073010 34 17.17 +02 44 25.4          18.1 GVEE131G34
         K21E04B KC2021 03 12.78288510 34 15.24 +02 45 15.4          18.1 GVEE131G34
         K21E04B KC2021 03 12.78504010 34 13.27 +02 46 05.3          17.6 GVEE131G34
         K21E04B KC2021 03 12.78719510 34 11.32 +02 46 55.5          18.0 GVEE131G34
         K21E04B 1C2021 03 12.80255 10 33 57.34 +02 52 53.7          19.7 VVEE131033
         K21E04B 1C2021 03 12.80289 10 33 57.02 +02 53 01.8          19.5 VVEE131033
         K21E04B 1C2021 03 12.80324 10 33 56.73 +02 53 09.4          19.4 VVEE131033
         K21E04B 1C2021 03 12.80364 10 33 56.37 +02 53 19.1          19.3 VVEE131033
         K21E04B KC2021 03 12.80875010 33 51.59 +02 55 19.0          18.4 GVEE131K62
         K21E04B KC2021 03 12.81023110 33 50.22 +02 55 53.9          18.3 GVEE131K62
         K21E04B KC2021 03 12.81622310 33 44.72 +02 58 13.4          18.2 GVEE131K62
         K21E04B KC2021 03 12.81771710 33 43.32 +02 58 48.2          18.4 GVEE131K62
         K21E04B KC2021 03 12.87088 10 32 54.53 +03 19 46.8          18.4 VqEE131C77
         K21E04B KC2021 03 12.87363410 32 52.50 +03 20 51.1          18.3 GVEE131I93
         K21E04B KC2021 03 12.87550 10 32 50.34 +03 21 35.3          19.1 VqEE131C77
         K21E04B KC2021 03 12.87737110 32 49.02 +03 22 19.7          18.0 GVEE131I93
         K21E04B KC2021 03 12.88002 10 32 46.07 +03 23 23.4          18.6 VqEE131C77
         K21E04B KC2021 03 12.88120810 32 45.45 +03 23 50.4          18.2 GVEE131I93
         K21E04B KC2021 03 12.90117310 32 25.71 +03 31 43.3          18.4 GVEE131L01
         K21E04B KC2021 03 12.90169210 32 25.22 +03 31 55.7          18.4 GVEE131L01
         K21E04B KC2021 03 12.90325010 32 23.74 +03 32 32.7          18.5 GVEE131L01
         K21E04B KC2021 03 12.90428810 32 22.77 +03 32 57.4          18.3 GVEE131L01
         K21E04B KC2021 03 12.90597310 32 21.17 +03 33 37.5          18.4 GVEE131L01
         K21E04B KC2021 03 12.90649210 32 20.68 +03 33 49.8          18.3 GVEE131L01
         K21E04B KC2021 03 12.92379910 32 04.34 +03 40 40.7          18.1 GVEE131595
         K21E04B KC2021 03 12.92625710 32 02.02 +03 41 39.2          18.2 GVEE131595
         K21E04B KC2021 03 12.92812310 32 00.57 +03 42 24.8          18.3 GVEE131203
         K21E04B KC2021 03 12.92871210 31 59.67 +03 42 37.8          18.2 GVEE131595
         K21E04B KC2021 03 12.93293910 31 55.98 +03 44 19.2          18.0 GVEE131203
         K21E04B KC2021 03 12.99376 10 30 58.89 +04 08 45.5          18.5 GVEE131J27
         K21E04B KC2021 03 12.99632 10 30 56.46 +04 09 46.7          18.6 GVEE131J27
         K21E04B KC2021 03 12.99946 10 30 53.41 +04 11 02.9          18.3 GVEE131J27
         K21E04B KC2021 03 13.02425010 30 28.81 +04 20 55.5          18.8 GVEE131K38
         K21E04B KC2021 03 13.03106110 30 22.26 +04 23 41.0          18.3 GVEE131K38
         K21E04B KC2021 03 13.03848810 30 15.11 +04 26 41.1          17.7 GVEE131K38
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
        f/3 Schmidt + CCD.
    203 GiaGa Observatory.  Observers S. Foglia, G. Galli.  Measurer G. Galli.
        0.36-m f/5.76 Schmidt-Cassegrain + CCD.
    204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
        CCD.
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
        Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
    703 Catalina Sky Survey.  Observer H. Groeller.  Measurers 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, K. W. Wierzchos.  0.68-m Schmidt + 10K CCD.
    C77 Bernezzo Observatory.  Observer A. Mantero.  0.25-m f/4.0 reflector + CCD.
    G34 Oberfrauendorf.  Observer T. Felber.  0.35-m f/6.3 Schmidt-Cassegrain +
        CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  Measurers
        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, K. W. Wierzchos.  1.0-m reflector +
        CCD.
    I93 St Pardon de Conques.  Observers F. Losse, W. D'Anna.  Measurer F. Losse.
        0.40-m f/3.7 reflector + CCD.
    J27 El Guijo Observatory.  Observer A. San Segundo.  0.30-m f/4 reflector +
        CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    K38 M57 Observatory, Saltrio.  Observer G. Baj.  0.3-m f/6.54 Ritchey-Chretien
        + CCD.
    K62 Teplice Observatory.  Observer Z. Moravec.  0.43-m f/4.5 reflector + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    L34 Galhassin Robotic Telescope, Isnello.  Observer A. Nastasi.  0.40-m
        reflector + CCD.
    N82 Multa Observatory.  Observer L. Elenin.  0.4-m f/1.25 reflector + CCD.
    Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurers G. Wells, D.
        Bamberger.  0.25-m f/8.0 Ritchey-Chretien + CCD.
    
    Orbital elements:
    2021 EB4                                                 Earth MOID = 0.0548 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M 219.98208              (2000.0)            P               Q
    n   0.93859011     Peri.  131.84548     +0.58148053     +0.80684924
    a   1.0331231      Node   171.48583     -0.77915495     +0.51541426
    e   0.6249385      Incl.   44.77705     +0.23408964     -0.28869091
    P   1.05           H   22.7           G   0.15           U   8
    Residuals in seconds of arc
    210311 703  0.2+  0.3-    210311 J95  0.2-  0.1-    210312 C77  1.3-  0.4+
    210311 703  0.5+  0.1-    210311 Z80  0.8-  0.0     210312 I93  0.3-  0.0
    210311 703  1.1+  0.7+    210311 J95  0.4-  0.1+    210312 C77  0.7+  0.4-
    210311 703  0.2-  0.0     210311 J95  0.1-  0.6-    210312 I93  0.1-  0.2+
    210311 474  0.1-  0.1+    210311 J95  0.0   0.1-    210312 C77  0.2+  0.8+
    210311 474  0.2-  0.0     210311 Z80  0.1+  0.0     210312 I93  0.2+  0.1+
    210311 474  0.3-  0.1+    210311 Z80  0.1+  0.1-    210312 L01  0.1+  0.0
    210311 474  0.0   0.1+    210312 204  0.1-  0.3+    210312 L01  0.1+  0.1+
    210311 I52  0.1+  0.4+    210312 204  0.3-  0.2+    210312 L01  0.1-  0.1+
    210311 I52  0.1-  0.0     210312 474  0.0   0.2-    210312 L01  0.1+  0.1+
    210311 I52  0.0   0.3-    210312 474  0.1-  0.2+    210312 L01  0.1-  0.1+
    210311 474  0.2-  0.2-    210312 474  0.0   0.1+    210312 L01  0.1-  0.1+
    210311 474  0.1-  0.2-    210312 G34  0.3-  0.3+    210312 595  0.0   0.3-
    210311 474  0.1+  0.2-    210312 G34  0.2+  0.1+    210312 595  0.1+  0.4-
    210311 L34  0.7+  0.8+    210312 G34  0.1+  0.1-    210312 203  0.0   0.2+
    210311 L34  0.3+  0.3+    210312 G34  0.4+  0.2-    210312 595  0.2-  0.4-
    210311 L34  0.5+  0.3+    210312 033  0.1+  0.0     210312 203  0.4-  0.3-
    210311 N82  0.5+  0.0     210312 033  0.1-  0.1+    210312 J27  0.3-  0.4+
    210311 N82  0.5+  0.7+    210312 033  0.4+  0.4-    210312 J27  0.2+  0.2-
    210311 N82  1.0+  0.6+    210312 033  0.5+  0.1-    210312 J27  0.3-  0.2+
    210311 L34  0.1+  0.2+    210312 K62  0.3+  0.0     210313 K38  0.3+  0.0
    210311 033  0.1+  0.1+    210312 K62  0.1+  0.2+    210313 K38  0.2+  0.4+
    210311 033  0.1-  0.3-    210312 K62  0.3+  0.5-    210313 K38  0.1+  0.3+
    210311 033  0.5-  0.2+    210312 K62  0.1-  0.7-
    
    Ephemeris:
    2021 EB4                 a,e,i = 1.03, 0.62, 45                  q = 0.3875
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 02 11    12 14 08.3 -33 42 27   0.5486  1.3444   119.5    39.7    23.6
    ...
    2021 02 26    12 01 04.0 -30 16 28   0.3050  1.2275   135.9    34.1    22.0
    ...
    2021 03 06    11 34 58.0 -21 57 16   0.1836  1.1565   151.4    24.3    20.5
    ...
    2021 03 12    10 45 07.8 -01 57 20   0.1075  1.0990   168.0    10.9    18.7
    2021 03 13    10 30 54.3 +04 11 49   0.09834 1.0891   164.7    13.9    18.6
    2021 03 14    10 13 48.6 +11 27 04   0.09100 1.0790   157.9    20.3    18.7
    ...
    2021 03 20    06 59 12.9 +55 12 24   0.1012  1.0165    99.0    75.4    20.4
    ...
    2021 03 28    03 07 22.1 +58 10 35   0.1981  0.9270    63.6   105.4    22.9
    ...
    2021 04 12    01 38 30.1 +49 23 58   0.4155  0.7406    41.0   117.4    24.8
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-E131
    


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