메타데이터
| 항목 |
값 |
| Designation |
494P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-31T00:08:54.064320Z |
| Orbit solution date (soln_date, UTC) |
2024-12-14T13:27:26Z |
| Obs used |
62 |
| NEO |
- |
| M1 |
15.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-10-08T09:52:34.550400Z |
| Discovery magnitude (MPC) |
23.38 G |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-05-16.0000000 |
| e |
0.35748875 |
| q (au) |
2.440228 |
| a (au) |
3.797954 |
| i (deg) |
7.788642 |
| Ω (om, deg) |
245.048909 |
| ω (w, deg) |
48.878232 |
| M (ma, deg) |
309.264539 |
밝기
산란 + 전체 선형
$$
M_a = (16.901 + 5.392\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.901 |
| n |
5.392 |
| gf |
1.000 |
| gb |
-0.718 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
05:22:58.13 |
+22:17:08.9 |
HIP 25070 |
14.94 |
| 2026-07-29 12:00 |
05:23:24.62 |
+22:17:10.4 |
HIP 25274 |
12.68 |
| 2026-07-30 00:00 |
05:23:51.01 |
+22:17:11.5 |
HIP 25274 |
6.62 |
| 2026-07-30 12:00 |
05:24:17.30 |
+22:17:12.2 |
HIP 25274 |
1.22 |
| 2026-07-31 00:00 |
05:24:43.49 |
+22:17:12.4 |
HIP 25274 |
5.73 |
| 2026-07-31 12:00 |
05:25:09.58 |
+22:17:12.3 |
HIP 25274 |
11.71 |
| 2026-08-01 00:00 |
05:25:35.57 |
+22:17:11.7 |
HIP 25274 |
17.71 |
| 2026-08-01 12:00 |
05:26:01.46 |
+22:17:10.7 |
HIP 25274 |
23.69 |
| 2026-08-02 00:00 |
05:26:27.25 |
+22:17:09.3 |
HIP 25539 |
26.60 |
| 2026-08-02 12:00 |
05:26:52.94 |
+22:17:07.5 |
HIP 25539 |
23.38 |
| 2026-08-03 00:00 |
05:27:18.52 |
+22:17:05.3 |
HIP 25539 |
21.36 |
| 2026-08-03 12:00 |
05:27:44.00 |
+22:17:02.7 |
HIP 25539 |
20.87 |
| 2026-08-04 00:00 |
05:28:09.37 |
+22:16:59.7 |
HIP 25539 |
22.00 |
| 2026-08-04 12:00 |
05:28:34.64 |
+22:16:56.3 |
HIP 25539 |
24.51 |
| 2026-08-05 00:00 |
05:28:59.80 |
+22:16:52.4 |
HIP 25779 |
23.38 |
| 2026-08-05 12:00 |
05:29:24.85 |
+22:16:48.2 |
HIP 25779 |
19.50 |
| 2026-08-06 00:00 |
05:29:49.79 |
+22:16:43.6 |
HIP 25806 |
16.57 |
| 2026-08-06 12:00 |
05:30:14.62 |
+22:16:38.6 |
HIP 25806 |
12.93 |
| 2026-08-07 00:00 |
05:30:39.34 |
+22:16:33.2 |
HIP 25806 |
11.22 |
| 2026-08-07 12:00 |
05:31:03.95 |
+22:16:27.4 |
HIP 25806 |
12.25 |
| 2026-08-08 00:00 |
05:31:28.44 |
+22:16:21.3 |
HIP 25806 |
15.44 |
| 2026-08-08 12:00 |
05:31:52.82 |
+22:16:14.7 |
HIP 25806 |
19.76 |
| 2026-08-09 00:00 |
05:32:17.09 |
+22:16:07.8 |
HIP 25806 |
24.59 |
| 2026-08-09 12:00 |
05:32:41.23 |
+22:16:00.5 |
HIP 25806 |
29.68 |
| 2026-08-10 00:00 |
05:33:05.26 |
+22:15:52.8 |
HIP 26187 |
31.43 |
| 2026-08-10 12:00 |
05:33:29.17 |
+22:15:44.7 |
HIP 26187 |
27.21 |
| 2026-08-11 00:00 |
05:33:52.96 |
+22:15:36.2 |
HIP 26187 |
23.56 |
| 2026-08-11 12:00 |
05:34:16.63 |
+22:15:27.4 |
HIP 26240 |
19.33 |
| 2026-08-12 00:00 |
05:34:40.18 |
+22:15:18.2 |
HIP 26240 |
15.24 |
| 2026-08-12 12:00 |
05:35:03.60 |
+22:15:08.7 |
HIP 26240 |
12.28 |
| 2026-08-13 00:00 |
05:35:26.90 |
+22:14:58.7 |
HIP 26240 |
11.31 |
| 2026-08-13 12:00 |
05:35:50.08 |
+22:14:48.4 |
HIP 26240 |
12.77 |
| 2026-08-14 00:00 |
05:36:13.12 |
+22:14:37.8 |
HIP 26389 |
14.31 |
| 2026-08-14 12:00 |
05:36:36.04 |
+22:14:26.8 |
HIP 26389 |
10.08 |
| 2026-08-15 00:00 |
05:36:58.83 |
+22:14:15.5 |
HIP 26389 |
7.40 |
| 2026-08-15 12:00 |
05:37:21.50 |
+22:14:03.7 |
HIP 26389 |
7.97 |
| 2026-08-16 00:00 |
05:37:44.03 |
+22:13:51.7 |
HIP 26389 |
11.25 |
| 2026-08-16 12:00 |
05:38:06.43 |
+22:13:39.3 |
HIP 26484 |
14.38 |
| 2026-08-17 00:00 |
05:38:28.69 |
+22:13:26.6 |
HIP 26484 |
16.07 |
| 2026-08-17 12:00 |
05:38:50.83 |
+22:13:13.5 |
HIP 26484 |
19.04 |
| 2026-08-18 00:00 |
05:39:12.83 |
+22:13:00.1 |
HIP 26484 |
22.76 |
| 2026-08-18 12:00 |
05:39:34.69 |
+22:12:46.3 |
HIP 26484 |
26.91 |
| 2026-08-19 00:00 |
05:39:56.42 |
+22:12:32.2 |
HIP 26616 |
27.61 |