메타데이터
| 항목 |
값 |
| Designation |
472P/NEAT-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-07-27T15:46:29.570880Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:41Z |
| Obs used |
1350 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
14.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-09-09T02:13:12.604800Z |
| Discovery magnitude (MPC) |
21.70 G |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-04-29.0000000 |
| e |
0.55921342 |
| q (au) |
3.369110 |
| a (au) |
7.643404 |
| i (deg) |
10.900416 |
| Ω (om, deg) |
207.853697 |
| ω (w, deg) |
218.510075 |
| M (ma, deg) |
253.579745 |
밝기
산란 + 전체 선형
$$
M_a = (5.610 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.610 |
| n |
6.000 |
| gf |
0.889 |
| gb |
-0.500 |
| k |
0.954 |
| δ90 |
1.000 |
| 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 |
| 2023-09-05 |
2024-07-25 |
+47.1974 |
-24.324 |
| 2024-08-12 |
2026-02-19 |
+0.5745 |
-0.429 |
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 |
10:28:12.55 |
+02:40:09.4 |
HIP 51321 |
11.59 |
| 2026-07-29 12:00 |
10:28:34.23 |
+02:38:30.9 |
HIP 51321 |
6.11 |
| 2026-07-30 00:00 |
10:28:55.95 |
+02:36:52.0 |
HIP 51321 |
2.05 |
| 2026-07-30 12:00 |
10:29:17.69 |
+02:35:12.7 |
HIP 51321 |
5.96 |
| 2026-07-31 00:00 |
10:29:39.45 |
+02:33:32.8 |
HIP 51321 |
11.47 |
| 2026-07-31 12:00 |
10:30:01.24 |
+02:31:52.5 |
HIP 51321 |
17.10 |
| 2026-08-01 00:00 |
10:30:23.05 |
+02:30:11.8 |
HIP 51485 |
19.27 |
| 2026-08-01 12:00 |
10:30:44.89 |
+02:28:30.6 |
HIP 51485 |
16.00 |
| 2026-08-02 00:00 |
10:31:06.75 |
+02:26:48.9 |
HIP 51485 |
14.33 |
| 2026-08-02 12:00 |
10:31:28.63 |
+02:25:06.8 |
HIP 51485 |
14.84 |
| 2026-08-03 00:00 |
10:31:50.53 |
+02:23:24.3 |
HIP 51485 |
17.33 |
| 2026-08-03 12:00 |
10:32:12.46 |
+02:21:41.3 |
HIP 51485 |
21.13 |
| 2026-08-04 00:00 |
10:32:34.41 |
+02:19:57.9 |
HIP 51485 |
25.66 |
| 2026-08-04 12:00 |
10:32:56.37 |
+02:18:14.1 |
HIP 51711 |
24.26 |
| 2026-08-05 00:00 |
10:33:18.36 |
+02:16:29.8 |
HIP 51711 |
22.91 |
| 2026-08-05 12:00 |
10:33:40.37 |
+02:14:45.2 |
HIP 51809 |
21.56 |
| 2026-08-06 00:00 |
10:34:02.39 |
+02:13:00.0 |
HIP 51809 |
15.93 |
| 2026-08-06 12:00 |
10:34:24.44 |
+02:11:14.5 |
HIP 51809 |
10.46 |
| 2026-08-07 00:00 |
10:34:46.50 |
+02:09:28.6 |
HIP 51809 |
5.64 |
| 2026-08-07 12:00 |
10:35:08.58 |
+02:07:42.2 |
HIP 51809 |
4.61 |
| 2026-08-08 00:00 |
10:35:30.68 |
+02:05:55.5 |
HIP 51809 |
8.83 |
| 2026-08-08 12:00 |
10:35:52.79 |
+02:04:08.3 |
HIP 51809 |
14.22 |
| 2026-08-09 00:00 |
10:36:14.92 |
+02:02:20.7 |
HIP 51809 |
19.85 |
| 2026-08-09 12:00 |
10:36:37.06 |
+02:00:32.8 |
HIP 51809 |
25.57 |
| 2026-08-10 00:00 |
10:36:59.22 |
+01:58:44.4 |
HIP 51809 |
31.33 |
| 2026-08-10 12:00 |
10:37:21.39 |
+01:56:55.7 |
HIP 51809 |
37.12 |
| 2026-08-11 00:00 |
10:37:43.58 |
+01:55:06.6 |
HIP 52061 |
41.21 |
| 2026-08-11 12:00 |
10:38:05.78 |
+01:53:17.1 |
HIP 52061 |
38.60 |
| 2026-08-12 00:00 |
10:38:27.99 |
+01:51:27.2 |
HIP 52061 |
36.73 |
| 2026-08-12 12:00 |
10:38:50.21 |
+01:49:37.0 |
HIP 52061 |
35.73 |
| 2026-08-13 00:00 |
10:39:12.45 |
+01:47:46.4 |
HIP 52205 |
32.59 |
| 2026-08-13 12:00 |
10:39:34.69 |
+01:45:55.4 |
HIP 52205 |
29.25 |
| 2026-08-14 00:00 |
10:39:56.95 |
+01:44:04.1 |
HIP 52205 |
26.79 |
| 2026-08-14 12:00 |
10:40:19.21 |
+01:42:12.4 |
HIP 52205 |
25.46 |
| 2026-08-15 00:00 |
10:40:41.48 |
+01:40:20.4 |
HIP 52205 |
25.45 |
| 2026-08-15 12:00 |
10:41:03.76 |
+01:38:28.0 |
HIP 52205 |
26.75 |
| 2026-08-16 00:00 |
10:41:26.05 |
+01:36:35.3 |
HIP 52205 |
29.20 |
| 2026-08-16 12:00 |
10:41:48.34 |
+01:34:42.3 |
HIP 52454 |
31.21 |
| 2026-08-17 00:00 |
10:42:10.64 |
+01:32:48.9 |
HIP 52454 |
28.69 |
| 2026-08-17 12:00 |
10:42:32.95 |
+01:30:55.3 |
HIP 52454 |
27.24 |
| 2026-08-18 00:00 |
10:42:55.25 |
+01:29:01.3 |
HIP 52454 |
27.02 |
| 2026-08-18 12:00 |
10:43:17.57 |
+01:27:06.9 |
HIP 52454 |
28.06 |
| 2026-08-19 00:00 |
10:43:39.89 |
+01:25:12.3 |
HIP 52454 |
30.25 |