메타데이터
| 항목 |
값 |
| Designation |
C/1954 M2 (Kresak-Peltier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1954-08-29T16:00:13.749120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
10 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1954-08-03.0000000 |
| e |
1.00022617 |
| q (au) |
0.746369 |
| a (au) |
-3300.044138 |
| i (deg) |
88.539550 |
| Ω (om, deg) |
75.566452 |
| ω (w, deg) |
254.728144 |
| M (ma, deg) |
-0.000139 |
밝기
산란 + 전체 선형
$$
M_a = (7.972 + 3.248\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.972 |
| n |
3.248 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
01:08:22.45 |
+84:18:34.3 |
HIP 4965 |
19.11 |
| 2026-03-26 12:00 |
01:08:33.45 |
+84:18:31.6 |
HIP 4965 |
19.25 |
| 2026-03-27 00:00 |
01:08:44.46 |
+84:18:29.0 |
HIP 4965 |
19.39 |
| 2026-03-27 12:00 |
01:08:55.50 |
+84:18:26.5 |
HIP 4965 |
19.53 |
| 2026-03-28 00:00 |
01:09:06.55 |
+84:18:24.2 |
HIP 4965 |
19.67 |
| 2026-03-28 12:00 |
01:09:17.61 |
+84:18:22.0 |
HIP 4965 |
19.81 |
| 2026-03-29 00:00 |
01:09:28.69 |
+84:18:20.0 |
HIP 4965 |
19.95 |
| 2026-03-29 12:00 |
01:09:39.79 |
+84:18:18.1 |
HIP 4965 |
20.10 |
| 2026-03-30 00:00 |
01:09:50.89 |
+84:18:16.3 |
HIP 4965 |
20.24 |
| 2026-03-30 12:00 |
01:10:02.02 |
+84:18:14.7 |
HIP 4965 |
20.38 |
| 2026-03-31 00:00 |
01:10:13.15 |
+84:18:13.2 |
HIP 4965 |
20.53 |
| 2026-03-31 12:00 |
01:10:24.30 |
+84:18:11.9 |
HIP 4965 |
20.68 |
| 2026-04-01 00:00 |
01:10:35.47 |
+84:18:10.7 |
HIP 4965 |
20.82 |
| 2026-04-01 12:00 |
01:10:46.64 |
+84:18:09.6 |
HIP 4965 |
20.97 |
| 2026-04-02 00:00 |
01:10:57.82 |
+84:18:08.7 |
HIP 4965 |
21.12 |
| 2026-04-02 12:00 |
01:11:09.02 |
+84:18:07.9 |
HIP 4965 |
21.26 |
| 2026-04-03 00:00 |
01:11:20.22 |
+84:18:07.3 |
HIP 4965 |
21.41 |
| 2026-04-03 12:00 |
01:11:31.44 |
+84:18:06.8 |
HIP 4965 |
21.56 |
| 2026-04-04 00:00 |
01:11:42.66 |
+84:18:06.5 |
HIP 4965 |
21.71 |
| 2026-04-04 12:00 |
01:11:53.89 |
+84:18:06.2 |
HIP 4965 |
21.86 |
| 2026-04-05 00:00 |
01:12:05.13 |
+84:18:06.2 |
HIP 4965 |
22.01 |
| 2026-04-05 12:00 |
01:12:16.37 |
+84:18:06.2 |
HIP 4965 |
22.16 |
| 2026-04-06 00:00 |
01:12:27.63 |
+84:18:06.5 |
HIP 4965 |
22.31 |
| 2026-04-06 12:00 |
01:12:38.88 |
+84:18:06.8 |
HIP 4965 |
22.47 |
| 2026-04-07 00:00 |
01:12:50.15 |
+84:18:07.3 |
HIP 4965 |
22.62 |
| 2026-04-07 12:00 |
01:13:01.42 |
+84:18:07.9 |
HIP 4965 |
22.77 |
| 2026-04-08 00:00 |
01:13:12.69 |
+84:18:08.7 |
HIP 4965 |
22.92 |
| 2026-04-08 12:00 |
01:13:23.97 |
+84:18:09.6 |
HIP 4965 |
23.08 |
| 2026-04-09 00:00 |
01:13:35.25 |
+84:18:10.6 |
HIP 4965 |
23.23 |
| 2026-04-09 12:00 |
01:13:46.53 |
+84:18:11.8 |
HIP 4965 |
23.38 |
| 2026-04-10 00:00 |
01:13:57.81 |
+84:18:13.2 |
HIP 4965 |
23.54 |
| 2026-04-10 12:00 |
01:14:09.10 |
+84:18:14.6 |
HIP 4965 |
23.69 |
| 2026-04-11 00:00 |
01:14:20.38 |
+84:18:16.2 |
HIP 4965 |
23.85 |
| 2026-04-11 12:00 |
01:14:31.67 |
+84:18:18.0 |
HIP 4965 |
24.00 |
| 2026-04-12 00:00 |
01:14:42.96 |
+84:18:19.9 |
HIP 4965 |
24.16 |
| 2026-04-12 12:00 |
01:14:54.24 |
+84:18:21.9 |
HIP 4965 |
24.31 |
| 2026-04-13 00:00 |
01:15:05.53 |
+84:18:24.0 |
HIP 4965 |
24.47 |
| 2026-04-13 12:00 |
01:15:16.81 |
+84:18:26.3 |
HIP 4965 |
24.63 |
| 2026-04-14 00:00 |
01:15:28.09 |
+84:18:28.8 |
HIP 4965 |
24.78 |
| 2026-04-14 12:00 |
01:15:39.36 |
+84:18:31.4 |
HIP 4965 |
24.94 |
| 2026-04-15 00:00 |
01:15:50.64 |
+84:18:34.1 |
HIP 4965 |
25.10 |
| 2026-04-15 12:00 |
01:16:01.90 |
+84:18:36.9 |
HIP 4965 |
25.26 |
| 2026-04-16 00:00 |
01:16:13.16 |
+84:18:39.9 |
HIP 4965 |
25.41 |