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) |
| 2026-06-01 00:00 |
09:52:09.02 |
+04:40:07.7 |
HIP 48475 |
17.47 |
| 2026-06-01 12:00 |
09:52:23.06 |
+04:39:49.7 |
HIP 48475 |
14.29 |
| 2026-06-02 00:00 |
09:52:37.20 |
+04:39:30.8 |
HIP 48475 |
11.29 |
| 2026-06-02 12:00 |
09:52:51.46 |
+04:39:11.0 |
HIP 48475 |
8.68 |
| 2026-06-03 00:00 |
09:53:05.82 |
+04:38:50.3 |
HIP 48475 |
6.95 |
| 2026-06-03 12:00 |
09:53:20.29 |
+04:38:28.7 |
HIP 48475 |
6.86 |
| 2026-06-04 00:00 |
09:53:34.87 |
+04:38:06.2 |
HIP 48475 |
8.50 |
| 2026-06-04 12:00 |
09:53:49.56 |
+04:37:42.9 |
HIP 48475 |
11.15 |
| 2026-06-05 00:00 |
09:54:04.35 |
+04:37:18.7 |
HIP 48475 |
14.29 |
| 2026-06-05 12:00 |
09:54:19.24 |
+04:36:53.6 |
HIP 48475 |
17.67 |
| 2026-06-06 00:00 |
09:54:34.24 |
+04:36:27.7 |
HIP 48475 |
21.19 |
| 2026-06-06 12:00 |
09:54:49.34 |
+04:36:00.8 |
HIP 48552 |
23.27 |
| 2026-06-07 00:00 |
09:55:04.54 |
+04:35:33.2 |
HIP 48552 |
25.61 |
| 2026-06-07 12:00 |
09:55:19.85 |
+04:35:04.6 |
HIP 48552 |
28.29 |
| 2026-06-08 00:00 |
09:55:35.26 |
+04:34:35.2 |
HIP 48768 |
27.16 |
| 2026-06-08 12:00 |
09:55:50.76 |
+04:34:05.0 |
HIP 48768 |
24.31 |
| 2026-06-09 00:00 |
09:56:06.37 |
+04:33:33.9 |
HIP 48768 |
21.76 |
| 2026-06-09 12:00 |
09:56:22.07 |
+04:33:01.9 |
HIP 48768 |
19.66 |
| 2026-06-10 00:00 |
09:56:37.87 |
+04:32:29.1 |
HIP 48768 |
18.16 |
| 2026-06-10 12:00 |
09:56:53.77 |
+04:31:55.5 |
HIP 48768 |
17.44 |
| 2026-06-11 00:00 |
09:57:09.76 |
+04:31:21.0 |
HIP 48768 |
17.62 |
| 2026-06-11 12:00 |
09:57:25.85 |
+04:30:45.7 |
HIP 48768 |
18.68 |
| 2026-06-12 00:00 |
09:57:42.03 |
+04:30:09.5 |
HIP 48768 |
20.52 |
| 2026-06-12 12:00 |
09:57:58.31 |
+04:29:32.5 |
HIP 48923 |
22.76 |
| 2026-06-13 00:00 |
09:58:14.68 |
+04:28:54.7 |
HIP 48923 |
21.37 |
| 2026-06-13 12:00 |
09:58:31.15 |
+04:28:16.0 |
HIP 48923 |
20.72 |
| 2026-06-14 00:00 |
09:58:47.70 |
+04:27:36.6 |
HIP 48923 |
20.91 |
| 2026-06-14 12:00 |
09:59:04.34 |
+04:26:56.3 |
HIP 48923 |
21.93 |
| 2026-06-15 00:00 |
09:59:21.08 |
+04:26:15.1 |
HIP 48923 |
23.68 |
| 2026-06-15 12:00 |
09:59:37.90 |
+04:25:33.2 |
HIP 48923 |
26.02 |
| 2026-06-16 00:00 |
09:59:54.81 |
+04:24:50.4 |
HIP 48923 |
28.83 |
| 2026-06-16 12:00 |
10:00:11.81 |
+04:24:06.9 |
HIP 48923 |
32.00 |
| 2026-06-17 00:00 |
10:00:28.90 |
+04:23:22.5 |
HIP 48923 |
35.42 |
| 2026-06-17 12:00 |
10:00:46.07 |
+04:22:37.4 |
HIP 49180 |
34.83 |
| 2026-06-18 00:00 |
10:01:03.32 |
+04:21:51.4 |
HIP 49180 |
31.61 |
| 2026-06-18 12:00 |
10:01:20.66 |
+04:21:04.7 |
HIP 49180 |
28.68 |
| 2026-06-19 00:00 |
10:01:38.08 |
+04:20:17.1 |
HIP 49180 |
26.15 |
| 2026-06-19 12:00 |
10:01:55.58 |
+04:19:28.8 |
HIP 49180 |
24.14 |
| 2026-06-20 00:00 |
10:02:13.17 |
+04:18:39.7 |
HIP 49180 |
22.82 |
| 2026-06-20 12:00 |
10:02:30.83 |
+04:17:49.8 |
HIP 49180 |
22.31 |
| 2026-06-21 00:00 |
10:02:48.57 |
+04:16:59.2 |
HIP 49288 |
22.49 |
| 2026-06-21 12:00 |
10:03:06.39 |
+04:16:07.8 |
HIP 49288 |
19.57 |
| 2026-06-22 00:00 |
10:03:24.29 |
+04:15:15.6 |
HIP 49288 |
17.33 |