메타데이터
| 항목 |
값 |
| Designation |
P/2023 Y2 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-08-09T20:11:11.523840Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:12:44Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
17.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-12-17T11:22:10.185600Z |
| Discovery magnitude (MPC) |
19.40 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-12-10.0000000 |
| e |
0.39215548 |
| q (au) |
2.275929 |
| a (au) |
3.744261 |
| i (deg) |
6.992785 |
| Ω (om, deg) |
79.230881 |
| ω (w, deg) |
16.802088 |
| M (ma, deg) |
16.618047 |
밝기
산란 + 전체 선형
$$
M_a = (11.969 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.969 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
17:20:03.58 |
-22:29:24.2 |
HIP 84869 |
17.77 |
| 2026-05-12 12:00 |
17:19:47.58 |
-22:29:25.4 |
HIP 84706 |
17.85 |
| 2026-05-13 00:00 |
17:19:31.43 |
-22:29:26.5 |
HIP 84706 |
15.53 |
| 2026-05-13 12:00 |
17:19:15.12 |
-22:29:27.3 |
HIP 84706 |
13.83 |
| 2026-05-14 00:00 |
17:18:58.66 |
-22:29:28.0 |
HIP 84706 |
13.03 |
| 2026-05-14 12:00 |
17:18:42.06 |
-22:29:28.5 |
HIP 84706 |
13.32 |
| 2026-05-15 00:00 |
17:18:25.31 |
-22:29:28.8 |
HIP 84706 |
14.66 |
| 2026-05-15 12:00 |
17:18:08.42 |
-22:29:28.9 |
HIP 84543 |
15.89 |
| 2026-05-16 00:00 |
17:17:51.39 |
-22:29:28.8 |
HIP 84543 |
11.98 |
| 2026-05-16 12:00 |
17:17:34.22 |
-22:29:28.5 |
HIP 84543 |
8.05 |
| 2026-05-17 00:00 |
17:17:16.91 |
-22:29:28.1 |
HIP 84543 |
4.17 |
| 2026-05-17 12:00 |
17:16:59.48 |
-22:29:27.4 |
HIP 84543 |
1.35 |
| 2026-05-18 00:00 |
17:16:41.91 |
-22:29:26.5 |
HIP 84543 |
4.36 |
| 2026-05-18 12:00 |
17:16:24.22 |
-22:29:25.5 |
HIP 84543 |
8.34 |
| 2026-05-19 00:00 |
17:16:06.41 |
-22:29:24.3 |
HIP 84543 |
12.42 |
| 2026-05-19 12:00 |
17:15:48.47 |
-22:29:22.8 |
HIP 84543 |
16.54 |
| 2026-05-20 00:00 |
17:15:30.42 |
-22:29:21.2 |
HIP 84299 |
20.37 |
| 2026-05-20 12:00 |
17:15:12.26 |
-22:29:19.4 |
HIP 84299 |
16.37 |
| 2026-05-21 00:00 |
17:14:53.98 |
-22:29:17.3 |
HIP 84299 |
12.47 |
| 2026-05-21 12:00 |
17:14:35.60 |
-22:29:15.1 |
HIP 84299 |
8.86 |
| 2026-05-22 00:00 |
17:14:17.11 |
-22:29:12.7 |
HIP 84299 |
6.11 |
| 2026-05-22 12:00 |
17:13:58.52 |
-22:29:10.1 |
HIP 84299 |
5.72 |
| 2026-05-23 00:00 |
17:13:39.83 |
-22:29:07.3 |
HIP 84299 |
8.08 |
| 2026-05-23 12:00 |
17:13:21.05 |
-22:29:04.3 |
HIP 84299 |
11.64 |
| 2026-05-24 00:00 |
17:13:02.17 |
-22:29:01.2 |
HIP 84299 |
15.62 |
| 2026-05-24 12:00 |
17:12:43.20 |
-22:28:57.8 |
HIP 84101 |
18.39 |
| 2026-05-25 00:00 |
17:12:24.15 |
-22:28:54.2 |
HIP 84101 |
14.79 |
| 2026-05-25 12:00 |
17:12:05.01 |
-22:28:50.5 |
HIP 84101 |
11.73 |
| 2026-05-26 00:00 |
17:11:45.79 |
-22:28:46.5 |
HIP 84101 |
9.78 |
| 2026-05-26 12:00 |
17:11:26.50 |
-22:28:42.4 |
HIP 84101 |
9.65 |
| 2026-05-27 00:00 |
17:11:07.13 |
-22:28:38.1 |
HIP 84101 |
11.42 |
| 2026-05-27 12:00 |
17:10:47.68 |
-22:28:33.5 |
HIP 84019 |
13.40 |
| 2026-05-28 00:00 |
17:10:28.18 |
-22:28:28.8 |
HIP 84019 |
12.85 |
| 2026-05-28 12:00 |
17:10:08.60 |
-22:28:23.9 |
HIP 84019 |
13.84 |
| 2026-05-29 00:00 |
17:09:48.96 |
-22:28:18.9 |
HIP 84019 |
16.10 |
| 2026-05-29 12:00 |
17:09:29.27 |
-22:28:13.6 |
HIP 84019 |
19.19 |
| 2026-05-30 00:00 |
17:09:09.52 |
-22:28:08.1 |
HIP 84019 |
22.79 |
| 2026-05-30 12:00 |
17:08:49.71 |
-22:28:02.5 |
HIP 84019 |
26.70 |
| 2026-05-31 00:00 |
17:08:29.86 |
-22:27:56.7 |
HIP 84019 |
30.80 |
| 2026-05-31 12:00 |
17:08:09.96 |
-22:27:50.7 |
HIP 84019 |
35.04 |
| 2026-06-01 00:00 |
17:07:50.01 |
-22:27:44.6 |
HIP 83662 |
34.74 |
| 2026-06-01 12:00 |
17:07:30.03 |
-22:27:38.2 |
HIP 83662 |
31.59 |
| 2026-06-02 00:00 |
17:07:10.01 |
-22:27:31.7 |
HIP 83662 |
28.84 |