메타데이터
| 항목 |
값 |
| Designation |
512P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-03-26T20:06:03.300480Z |
| Orbit solution date (soln_date, UTC) |
2026-03-12T02:52:39Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
14.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2012-10-10T08:37:45.206400Z |
| Discovery magnitude (MPC) |
21.10 T |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-04-16.0000000 |
| e |
0.15528156 |
| q (au) |
4.838682 |
| a (au) |
5.728160 |
| i (deg) |
12.552486 |
| Ω (om, deg) |
73.777821 |
| ω (w, deg) |
308.074423 |
| M (ma, deg) |
132.724572 |
밝기
산란 + 전체 선형
$$
M_a = (11.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.865 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.832 |
| k |
0.800 |
| δ90 |
9.999 |
| 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) |
| 2026-03-26 00:00 |
00:11:36.88 |
-09:49:48.8 |
HIP 947 |
7.71 |
| 2026-03-26 12:00 |
00:12:04.68 |
-09:46:44.0 |
HIP 947 |
7.45 |
| 2026-03-27 00:00 |
00:12:32.47 |
-09:43:39.5 |
HIP 947 |
12.83 |
| 2026-03-27 12:00 |
00:13:00.25 |
-09:40:35.4 |
HIP 1117 |
14.29 |
| 2026-03-28 00:00 |
00:13:28.03 |
-09:37:31.6 |
HIP 1117 |
9.84 |
| 2026-03-28 12:00 |
00:13:55.80 |
-09:34:28.1 |
HIP 1117 |
10.08 |
| 2026-03-29 00:00 |
00:14:23.56 |
-09:31:25.0 |
HIP 1191 |
8.11 |
| 2026-03-29 12:00 |
00:14:51.31 |
-09:28:22.3 |
HIP 1191 |
5.85 |
| 2026-03-30 00:00 |
00:15:19.05 |
-09:25:20.0 |
HIP 1274 |
10.63 |
| 2026-03-30 12:00 |
00:15:46.79 |
-09:22:18.0 |
HIP 1274 |
7.23 |
| 2026-03-31 00:00 |
00:16:14.51 |
-09:19:16.3 |
HIP 1274 |
10.16 |
| 2026-03-31 12:00 |
00:16:42.22 |
-09:16:15.1 |
HIP 1274 |
16.31 |
| 2026-04-01 00:00 |
00:17:09.93 |
-09:13:14.2 |
HIP 1274 |
23.24 |
| 2026-04-01 12:00 |
00:17:37.62 |
-09:10:13.7 |
HIP 1412 |
29.30 |
| 2026-04-02 00:00 |
00:18:05.30 |
-09:07:13.6 |
HIP 1562 |
26.66 |
| 2026-04-02 12:00 |
00:18:32.97 |
-09:04:13.8 |
HIP 1562 |
19.71 |
| 2026-04-03 00:00 |
00:19:00.62 |
-09:01:14.5 |
HIP 1562 |
13.33 |
| 2026-04-03 12:00 |
00:19:28.26 |
-08:58:15.5 |
HIP 1562 |
8.85 |
| 2026-04-04 00:00 |
00:19:55.89 |
-08:55:17.0 |
HIP 1626 |
5.89 |
| 2026-04-04 12:00 |
00:20:23.51 |
-08:52:18.8 |
HIP 1626 |
2.20 |
| 2026-04-05 00:00 |
00:20:51.11 |
-08:49:21.0 |
HIP 1626 |
9.25 |
| 2026-04-05 12:00 |
00:21:18.69 |
-08:46:23.7 |
HIP 1626 |
16.63 |
| 2026-04-06 00:00 |
00:21:46.26 |
-08:43:26.8 |
HIP 1626 |
24.04 |
| 2026-04-06 12:00 |
00:22:13.82 |
-08:40:30.3 |
HIP 1692 |
27.97 |
| 2026-04-07 00:00 |
00:22:41.36 |
-08:37:34.2 |
HIP 1692 |
30.04 |
| 2026-04-07 12:00 |
00:23:08.88 |
-08:34:38.5 |
HIP 1692 |
33.65 |
| 2026-04-08 00:00 |
00:23:36.39 |
-08:31:43.2 |
HIP 2038 |
35.32 |
| 2026-04-08 12:00 |
00:24:03.87 |
-08:28:48.4 |
HIP 2038 |
27.98 |
| 2026-04-09 00:00 |
00:24:31.34 |
-08:25:54.0 |
HIP 2038 |
20.66 |
| 2026-04-09 12:00 |
00:24:58.79 |
-08:23:00.1 |
HIP 2038 |
13.45 |
| 2026-04-10 00:00 |
00:25:26.23 |
-08:20:06.6 |
HIP 2038 |
6.60 |
| 2026-04-10 12:00 |
00:25:53.64 |
-08:17:13.6 |
HIP 2038 |
3.87 |
| 2026-04-11 00:00 |
00:26:21.03 |
-08:14:21.0 |
HIP 2038 |
9.74 |
| 2026-04-11 12:00 |
00:26:48.40 |
-08:11:28.9 |
HIP 2038 |
16.82 |
| 2026-04-12 00:00 |
00:27:15.75 |
-08:08:37.2 |
HIP 2143 |
16.18 |
| 2026-04-12 12:00 |
00:27:43.08 |
-08:05:46.0 |
HIP 2143 |
15.83 |
| 2026-04-13 00:00 |
00:28:10.39 |
-08:02:55.3 |
HIP 2143 |
18.64 |
| 2026-04-13 12:00 |
00:28:37.67 |
-08:00:05.0 |
HIP 2275 |
19.21 |
| 2026-04-14 00:00 |
00:29:04.93 |
-07:57:15.3 |
HIP 2275 |
15.09 |
| 2026-04-14 12:00 |
00:29:32.17 |
-07:54:26.0 |
HIP 2275 |
13.91 |
| 2026-04-15 00:00 |
00:29:59.38 |
-07:51:37.2 |
HIP 2394 |
15.35 |
| 2026-04-15 12:00 |
00:30:26.56 |
-07:48:48.9 |
HIP 2394 |
16.25 |
| 2026-04-16 00:00 |
00:30:53.72 |
-07:46:01.1 |
HIP 2394 |
19.96 |