메타데이터
| 항목 |
값 |
| Designation |
226P/Pigott-LINEAR-Kowalski |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-09-04T12:35:50.089920Z |
| Orbit solution date (soln_date, UTC) |
2024-07-01T08:58:31Z |
| Obs used |
1679 |
| NEO |
- |
| M1 |
10.100 |
| K1 |
21.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-03-24.0000000 |
| e |
0.52818078 |
| q (au) |
1.778058 |
| a (au) |
3.768516 |
| i (deg) |
44.003907 |
| Ω (om, deg) |
54.006950 |
| ω (w, deg) |
341.100239 |
| M (ma, deg) |
125.358382 |
밝기
산란 + 전체 선형
$$
M_a = (10.651 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.651 |
| n |
6.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2023-07-26 |
2024-04-12 |
+17.6275 |
-4.597 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
13:26:08.18 |
+17:31:11.5 |
HIP 65587 |
12.11 |
| 2026-07-29 12:00 |
13:26:16.68 |
+17:27:14.0 |
HIP 65587 |
13.79 |
| 2026-07-30 00:00 |
13:26:25.32 |
+17:23:16.7 |
HIP 65587 |
16.52 |
| 2026-07-30 12:00 |
13:26:34.09 |
+17:19:19.3 |
HIP 65587 |
19.88 |
| 2026-07-31 00:00 |
13:26:42.99 |
+17:15:22.0 |
HIP 65583 |
18.46 |
| 2026-07-31 12:00 |
13:26:52.02 |
+17:11:24.8 |
HIP 65583 |
14.62 |
| 2026-08-01 00:00 |
13:27:01.18 |
+17:07:27.6 |
HIP 65583 |
11.29 |
| 2026-08-01 12:00 |
13:27:10.48 |
+17:03:30.5 |
HIP 65583 |
9.07 |
| 2026-08-02 00:00 |
13:27:19.90 |
+16:59:33.5 |
HIP 65583 |
8.89 |
| 2026-08-02 12:00 |
13:27:29.45 |
+16:55:36.6 |
HIP 65583 |
10.85 |
| 2026-08-03 00:00 |
13:27:39.13 |
+16:51:39.7 |
HIP 65583 |
14.10 |
| 2026-08-03 12:00 |
13:27:48.93 |
+16:47:42.9 |
HIP 65583 |
17.96 |
| 2026-08-04 00:00 |
13:27:58.86 |
+16:43:46.3 |
HIP 65583 |
22.13 |
| 2026-08-04 12:00 |
13:28:08.92 |
+16:39:49.7 |
HIP 65854 |
25.78 |
| 2026-08-05 00:00 |
13:28:19.10 |
+16:35:53.2 |
HIP 65854 |
23.98 |
| 2026-08-05 12:00 |
13:28:29.40 |
+16:31:56.9 |
HIP 65854 |
22.96 |
| 2026-08-06 00:00 |
13:28:39.82 |
+16:28:00.7 |
HIP 65733 |
21.12 |
| 2026-08-06 12:00 |
13:28:50.37 |
+16:24:04.6 |
HIP 65733 |
17.82 |
| 2026-08-07 00:00 |
13:29:01.04 |
+16:20:08.6 |
HIP 65733 |
15.28 |
| 2026-08-07 12:00 |
13:29:11.83 |
+16:16:12.7 |
HIP 65733 |
13.92 |
| 2026-08-08 00:00 |
13:29:22.74 |
+16:12:17.0 |
HIP 65733 |
14.12 |
| 2026-08-08 12:00 |
13:29:33.76 |
+16:08:21.5 |
HIP 65767 |
15.78 |
| 2026-08-09 00:00 |
13:29:44.91 |
+16:04:26.1 |
HIP 65767 |
14.35 |
| 2026-08-09 12:00 |
13:29:56.17 |
+16:00:30.8 |
HIP 65767 |
14.44 |
| 2026-08-10 00:00 |
13:30:07.55 |
+15:56:35.8 |
HIP 65767 |
16.05 |
| 2026-08-10 12:00 |
13:30:19.05 |
+15:52:40.9 |
HIP 65767 |
18.80 |
| 2026-08-11 00:00 |
13:30:30.66 |
+15:48:46.1 |
HIP 65767 |
22.28 |
| 2026-08-11 12:00 |
13:30:42.38 |
+15:44:51.6 |
HIP 65767 |
26.21 |
| 2026-08-12 00:00 |
13:30:54.22 |
+15:40:57.3 |
HIP 65871 |
25.00 |
| 2026-08-12 12:00 |
13:31:06.17 |
+15:37:03.1 |
HIP 65871 |
23.32 |
| 2026-08-13 00:00 |
13:31:18.23 |
+15:33:09.2 |
HIP 65871 |
22.61 |
| 2026-08-13 12:00 |
13:31:30.40 |
+15:29:15.4 |
HIP 65973 |
18.57 |
| 2026-08-14 00:00 |
13:31:42.69 |
+15:25:21.9 |
HIP 65973 |
14.79 |
| 2026-08-14 12:00 |
13:31:55.08 |
+15:21:28.6 |
HIP 65973 |
11.86 |
| 2026-08-15 00:00 |
13:32:07.58 |
+15:17:35.6 |
HIP 65973 |
10.54 |
| 2026-08-15 12:00 |
13:32:20.18 |
+15:13:42.8 |
HIP 65973 |
11.43 |
| 2026-08-16 00:00 |
13:32:32.89 |
+15:09:50.2 |
HIP 65973 |
14.12 |
| 2026-08-16 12:00 |
13:32:45.71 |
+15:05:57.9 |
HIP 65973 |
17.84 |
| 2026-08-17 00:00 |
13:32:58.63 |
+15:02:05.8 |
HIP 65973 |
22.06 |
| 2026-08-17 12:00 |
13:33:11.65 |
+14:58:14.0 |
HIP 65973 |
26.57 |
| 2026-08-18 00:00 |
13:33:24.78 |
+14:54:22.4 |
HIP 66305 |
28.15 |
| 2026-08-18 12:00 |
13:33:38.01 |
+14:50:31.1 |
HIP 66305 |
25.13 |
| 2026-08-19 00:00 |
13:33:51.34 |
+14:46:40.1 |
HIP 66305 |
22.79 |