D/1894 F1 (Denning) _ DI94F010 _ BD58801object = P/2007 HE4

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D/1894 F1 (Denning) _ DI94F010 = 2007 HE4 _ K07H04E _ BD58801object (Apr. 19.87 UT) = P/1894 F1 (Denning) _ PI94F010 = P/2007 HE4 (Denning) _ PK07H04E, MPEC 2024-Q14, CBET 5425

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P/2007 HE4 / PK07H04E was picked up at 0302 UT on 17 April 2007 by LINEAR, which observed it at 2007 April 17.13-14p3, 2007 April 18.12-16p4, and 2007 April 20.13-16p5. This detection was confirmed by Great Shefford Obs. (2007 April 17.89-90p2, 2007 April 18.87-88p4, 2007 April 19.85-87p4 & 2007 April 20.87-89p2), Grasslands Obs. (2007 April 18.19-20p3), the Catalina Sky Survey (CSS) (2007 April 18.20p2), Heidelberg-Konigstuhl Obs. (2007 April 18.81-82p3), Guidestar Obs. (2007 April 18.82-84p4), Sandlot Obs. (2007 April 19.11-15p4), Powell Obs. (2007 April 19.16p3), Dave Balam via Dominion Astrophysical Obs. (DomAO) (2007 April 19.18-19p3), Alter Satzberg Obs. (2007 April 19.80-84p6 & 2007 May 18.86-87p3), Drebach Obs. (2007 April 19.84-85p3), and Farra d'Isonzo Obs. (2007 April 19.86-87p2).
P/1894 F1 (Denning) / PI94F010 (q=1.561 AU, Q=8.843 AU, TP=2025 Dec. 4.40 TT) from Vienna Obs. (1894 March 27.80-85p3, 1894 March 28.80-84p2, 1894 March 29.79-81p2, 1894 March 30.79p1, 1894 March 31.80p1, 1894 April 2.86-87p2, 1894 April 3.83p1, 1894 April 4.85p1, 1894 April 4.97p1, 1894 April 6.84p1, 1894 April 8.84p1, 1894 April 9.92p1 & 1894 May 6.85-88p2), MPC code 522 (1894 March 27.85p1, 1894 March 28.86p1, 1894 March 29.82p1, 1894 March 31.83p1, 1894 April 2.84p1, 1894 April 6.91p1, 1894 April 23.86p1, 1894 April 24.86p1 & 1894 May 5.94p1), Prague Obs. (1894 March 27.86p1, 1894 March 29.84-86p3, 1894 March 30.84p1, 1894 April 1.82-83p2, 1894 April 7.83p1, 1894 April 8.83p1 & 1894 April 9.84p1), MPC code 516 (1894 March 27.86p1, 1894 March 27.96p1, 1894 March 28.82-83p2, 1894 March 29.82p1, 1894 March 30.84p1, 1894 March 31.82p1, 1894 April 1.82p1, 1894 April 5.94p2, 1894 April 7.84p1, 1894 April 8.96p1 & 1894 April 9.92p1), Pulkovo Obs. (1894 March 27.88p1, 1894 March 30.85p1, 1894 April 1.78p1, 1894 April 12.89p1, 1894 April 21.84p1, 1894 April 22.88p1 & 1894 April 23.85p1), MPC code 032 (1894 March 27.89p1, 1894 March 29.97p1, 1894 April 8.05p1 & 1894 April 9.01p1), MPC code 533 (1894 March 27.92p1, 1894 March 29.83p1, 1894 March 31.91p1, 1894 April 3.88p1, 1894 April 4.85p1, 1894 April 5.82p1 & 1894 April 7.90p1), Marseilles Obs. (1894 March 27.95p1, 1894 March 28.86p1, 1894 March 29.86p1, 1894 April 2.84p1, 1894 April 3.85p1, 1894 April 4.86p1, 1894 April 5.85p1, 1894 April 6.87p1, 1894 April 7.85p1, 1894 April 9.90p1, 1894 April 10.86p1, 1894 April 11.86p1, 1894 April 24.84p1 & 1894 April 25.86p1), MPC code 532 (1894 March 27.97p1, 1894 March 28.81p1, 1894 March 29.81p1, 1894 March 30.81p1, 1894 March 31.82p1, 1894 April 1.82p1, 1894 April 2.82p1 & 1894 April 3.82p1), MPC code 538 (1894 March 28.00p1 & 1894 April 8.03p1), MPC code 296 (1894 March 28.08p1, 1894 March 30.21p1, 1894 April 7.25p1, 1894 April 10.08p1, 1894 April 27.15p1, 1894 May 3.16p1, 1894 May 9.16p1 & 1894 May 10.15p1), MPC code H80 (1894 March 28.18p1, 1894 March 31.17p1, 1894 April 6.18p1, 1894 April 27.16p1, 1894 May 8.19p1 & 1894 May 9.16p1), MPC code 058 (1894 March 28.83p1), MPC code 035 (1894 March 28.84p1, 1894 March 28.92p1, 1894 March 29.90p1, 1894 March 30.98p1, 1894 March 31.90p1 & 1894 April 1.00p1), Collegio Romano Obs. (1894 March 28.85p1, 1894 March 29.85p1 & 1894 April 3.87p1), Karlsruhe Obs. (1894 March 28.86p1 & 1894 March 29.91p1), MPC code 534 (1894 March 28.87-88p2, 1894 March 29.85-86p2, 1894 March 30.87p1, 1894 April 3.90-92p2 & 1894 April 6.88p1), MPC code 526 (1894 March 28.89p1, 1894 March 29.86p1, 1894 March 30.86p1, 1894 March 30.99p1, 1894 March 31.84p1, 1894 March 31.95p1, 1894 April 1.84p1 & 1894 April 5.85p1), MPC code 040 (1894 March 28.93p1, 1894 March 29.90p1, 1894 March 30.89p1 & 1894 April 1.89p1), Toulouse Obs. (1894 March 28.95p1, 1894 March 29.90p1, 1894 April 7.90p1, 1894 April 9.89p1, 1894 April 24.87p1, 1894 April 25.87p1, 1894 April 30.95p1 & 1894 May 8.92p1), Besancon Obs. (1894 March 29.08p1, 1894 March 31.05p2, 1894 March 31.93p1 & 1894 April 1.01p1), Goodsell Obs. (1894 March 29.16p1, 1894 March 30.15p1, 1894 April 2.35p1, 1894 April 6.12p1, 1894 April 24.21p1, 1894 April 26.17p1, 1894 April 28.16p1 & 1894 May 4.19p1), MPC code 528 (1894 March 29.85p1), MPC code 513 (1894 March 29.90-93p2, 1894 April 2.87p1, 1894 April 3.87p1, 1894 April 3.94p1, 1894 April 7.87p1, 1894 April 7.96p1 & 1894 April 9.89-93p2), Geneva Obs. (1894 March 29.94p1, 1894 April 2.92p1, 1894 April 3.92p1 & 1894 April 5.87p1), MPC code 765 (1894 March 30.08p1, 1894 March 31.09p1, 1894 April 2.08p1, 1894 April 3.06p1, 1894 April 5.09p1 & 1894 April 13.34p1), Lick Obs. (1894 March 31.31p1), MPC code 135 (1894 March 31.77p1, 1894 April 1.79p1 & 1894 April 3.76p1), MPC code 539 (1894 March 31.98p1, 1894 April 2.02p1, 1894 April 2.96p1 & 1894 April 3.96p1), MPC code 724 (1894 April 1.33p1, 1894 April 1.38p1, 1894 April 4.13p1 & 1894 April 5.13p1), MPC code 295 (1894 April 4.10p1), Algiers-Bouzareah Obs. (1894 April 6.89-93p2, 1894 April 7.91-94p2, 1894 April 24.93p1 & 1894 April 25.86-88p2), and Nice Obs. (1894 May 22.92p1, 1894 May 28.92p1, 1894 June 1.92p1, 1894 June 2.92p1 & 1894 June 5.92p1).

Orbital elements:
P/1894 F1 (Denning)
Epoch 1894 Feb. 21.0 TT = JDT 2412880.5
T 1894 Feb. 9.94270 TT Rudenko
q 1.1470899 (2000.0) P Q
n 0.13305711 Peri. 46.36421 -0.66694056 -0.73889174
a 3.7999452 Node 85.72581 +0.65289212 -0.64164942
e 0.6981299 Incl. 5.52828 +0.35905734 -0.20573044
P 7.41
From 143 observations 1894 Mar. 27-June 5, mean residual 2".7.
Nongravitational parameters A1 = -0.49, A2 = +0.0257.

P/1894 F1 (Denning)
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5
T 2007 Apr. 22.41625 TT Rudenko
q 1.5768210 (2000.0) P Q
n 0.10532871 Peri. 108.04967 -0.64953256 -0.75986222
a 4.4405647 Node 22.52385 +0.66848894 -0.58749522
e 0.6449053 Incl. 4.00790 +0.36225679 -0.27831417
P 9.36
From 60 observations 2007 Apr. 17-May 18, mean residual 0".6.
Nongravitational parameters A1 = -0.49, A2 = +0.0257.

P/1894 F1 (Denning)
Epoch 2024 Oct. 17.0 TT = JDT 2460600.5
T 2025 Dec. 4.40072 TT Rudenko
q 1.5610058 (2000.0) P Q
n 0.10600949 Peri. 109.44861 -0.64277002 -0.76566022
a 4.4215333 Node 20.61140 +0.67387472 -0.58047498
e 0.6469537 Incl. 4.02693 +0.36433441 -0.27715201
P 9.30
From 60 observations 2007 Apr. 17-May 18, mean residual 0".6.
Nongravitational parameters A1 = -0.49, A2 = +0.0257.

Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2024 07 19 08 24 37.8 +17 57 34 2.5693 1.5684 7.8 5.0 19.5
...
2024 08 03 09 10 18.3 +14 29 11 2.5629 1.5548 5.1 3.3 19.5
...
2024 08 11 09 34 12.2 +12 22 44 2.5645 1.5547 3.9 2.5 19.5
...
2024 08 17 09 51 51.7 +10 42 23 2.5680 1.5580 3.1 2.0 19.5
2024 08 18 09 54 46.8 +10 25 16 2.5688 1.5588 2.9 1.9 19.5
2024 08 19 09 57 41.5 +10 08 03 2.5697 1.5597 2.8 1.8 19.5
...
2024 08 25 10 15 01.2 +08 22 53 2.5760 1.5667 2.4 1.6 19.5
...
2024 09 02 10 37 43.8 +05 58 41 2.5874 1.5802 2.7 1.7 19.6
...
2024 09 17 11 19 03.8 +01 22 54 2.6167 1.6179 5.0 3.1 19.7



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