메타데이터
| 항목 |
값 |
| Designation |
C/1988 P1 (Machholz) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1988-09-17T13:37:56.176320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:36Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1988-08-19.0000000 |
| e |
0.99999939 |
| q (au) |
0.164552 |
| a (au) |
268133.697775 |
| i (deg) |
40.198656 |
| Ω (om, deg) |
167.727558 |
| ω (w, deg) |
349.037996 |
| M (ma, deg) |
360.000000 |
밝기
산란 + 전체 선형
$$
M_a = (7.848 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.848 |
| n |
2.000 |
| gf |
0.982 |
| gb |
-1.000 |
| k |
0.950 |
| 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) |
| 2026-05-12 00:00 |
22:14:03.45 |
+00:30:29.6 |
HIP 109709 |
19.26 |
| 2026-05-12 12:00 |
22:14:03.79 |
+00:30:36.8 |
HIP 109709 |
19.41 |
| 2026-05-13 00:00 |
22:14:04.12 |
+00:30:43.9 |
HIP 109709 |
19.55 |
| 2026-05-13 12:00 |
22:14:04.44 |
+00:30:50.9 |
HIP 109709 |
19.69 |
| 2026-05-14 00:00 |
22:14:04.74 |
+00:30:57.9 |
HIP 109709 |
19.83 |
| 2026-05-14 12:00 |
22:14:05.02 |
+00:31:04.7 |
HIP 109709 |
19.97 |
| 2026-05-15 00:00 |
22:14:05.29 |
+00:31:11.6 |
HIP 109709 |
20.10 |
| 2026-05-15 12:00 |
22:14:05.55 |
+00:31:18.3 |
HIP 109709 |
20.23 |
| 2026-05-16 00:00 |
22:14:05.79 |
+00:31:24.9 |
HIP 109709 |
20.35 |
| 2026-05-16 12:00 |
22:14:06.02 |
+00:31:31.5 |
HIP 109709 |
20.48 |
| 2026-05-17 00:00 |
22:14:06.23 |
+00:31:38.0 |
HIP 109709 |
20.60 |
| 2026-05-17 12:00 |
22:14:06.43 |
+00:31:44.5 |
HIP 109709 |
20.71 |
| 2026-05-18 00:00 |
22:14:06.62 |
+00:31:50.8 |
HIP 109709 |
20.83 |
| 2026-05-18 12:00 |
22:14:06.78 |
+00:31:57.1 |
HIP 109709 |
20.94 |
| 2026-05-19 00:00 |
22:14:06.94 |
+00:32:03.3 |
HIP 109748 |
20.95 |
| 2026-05-19 12:00 |
22:14:07.08 |
+00:32:09.4 |
HIP 109748 |
20.86 |
| 2026-05-20 00:00 |
22:14:07.20 |
+00:32:15.5 |
HIP 109748 |
20.76 |
| 2026-05-20 12:00 |
22:14:07.31 |
+00:32:21.4 |
HIP 109748 |
20.67 |
| 2026-05-21 00:00 |
22:14:07.41 |
+00:32:27.3 |
HIP 109748 |
20.58 |
| 2026-05-21 12:00 |
22:14:07.49 |
+00:32:33.1 |
HIP 109748 |
20.49 |
| 2026-05-22 00:00 |
22:14:07.55 |
+00:32:38.9 |
HIP 109748 |
20.40 |
| 2026-05-22 12:00 |
22:14:07.60 |
+00:32:44.5 |
HIP 109748 |
20.31 |
| 2026-05-23 00:00 |
22:14:07.64 |
+00:32:50.1 |
HIP 109748 |
20.22 |
| 2026-05-23 12:00 |
22:14:07.66 |
+00:32:55.5 |
HIP 109748 |
20.13 |
| 2026-05-24 00:00 |
22:14:07.67 |
+00:33:00.9 |
HIP 109748 |
20.05 |
| 2026-05-24 12:00 |
22:14:07.66 |
+00:33:06.3 |
HIP 109748 |
19.96 |
| 2026-05-25 00:00 |
22:14:07.64 |
+00:33:11.5 |
HIP 109748 |
19.87 |
| 2026-05-25 12:00 |
22:14:07.60 |
+00:33:16.6 |
HIP 109748 |
19.79 |
| 2026-05-26 00:00 |
22:14:07.55 |
+00:33:21.7 |
HIP 109748 |
19.70 |
| 2026-05-26 12:00 |
22:14:07.48 |
+00:33:26.7 |
HIP 109748 |
19.62 |
| 2026-05-27 00:00 |
22:14:07.40 |
+00:33:31.6 |
HIP 109748 |
19.53 |
| 2026-05-27 12:00 |
22:14:07.30 |
+00:33:36.4 |
HIP 109748 |
19.45 |
| 2026-05-28 00:00 |
22:14:07.19 |
+00:33:41.2 |
HIP 109748 |
19.37 |
| 2026-05-28 12:00 |
22:14:07.07 |
+00:33:45.8 |
HIP 109748 |
19.28 |
| 2026-05-29 00:00 |
22:14:06.93 |
+00:33:50.4 |
HIP 109748 |
19.20 |
| 2026-05-29 12:00 |
22:14:06.77 |
+00:33:54.8 |
HIP 109748 |
19.12 |
| 2026-05-30 00:00 |
22:14:06.61 |
+00:33:59.2 |
HIP 109748 |
19.04 |
| 2026-05-30 12:00 |
22:14:06.42 |
+00:34:03.5 |
HIP 109748 |
18.96 |
| 2026-05-31 00:00 |
22:14:06.22 |
+00:34:07.8 |
HIP 109748 |
18.88 |
| 2026-05-31 12:00 |
22:14:06.01 |
+00:34:11.9 |
HIP 109748 |
18.80 |
| 2026-06-01 00:00 |
22:14:05.78 |
+00:34:15.9 |
HIP 109748 |
18.73 |
| 2026-06-01 12:00 |
22:14:05.54 |
+00:34:19.9 |
HIP 109748 |
18.65 |
| 2026-06-02 00:00 |
22:14:05.29 |
+00:34:23.8 |
HIP 109748 |
18.57 |