메타데이터
| 항목 |
값 |
| Designation |
C/2016 T3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-09-06T23:30:05.921280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:27Z |
| Obs used |
436 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
4.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-06-25.0000000 |
| e |
0.98138749 |
| q (au) |
2.649481 |
| a (au) |
142.349476 |
| i (deg) |
22.675960 |
| Ω (om, deg) |
271.748362 |
| ω (w, deg) |
194.677924 |
| M (ma, deg) |
359.957068 |
밝기
산란 + 전체 선형
$$
M_a = (12.344 + 2.067\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.344 |
| n |
2.067 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2016-10-10 |
2017-09-06 |
+7.4124 |
-4.382 |
| 2017-09-17 |
2018-04-18 |
+5.6541 |
-2.485 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
16:28:08.30 |
-31:42:05.8 |
HIP 80556 |
32.85 |
| 2026-03-26 12:00 |
16:28:06.03 |
-31:42:11.4 |
HIP 80556 |
32.69 |
| 2026-03-27 00:00 |
16:28:03.71 |
-31:42:16.9 |
HIP 80556 |
32.52 |
| 2026-03-27 12:00 |
16:28:01.33 |
-31:42:22.1 |
HIP 80556 |
32.36 |
| 2026-03-28 00:00 |
16:27:58.90 |
-31:42:27.3 |
HIP 80556 |
32.19 |
| 2026-03-28 12:00 |
16:27:56.42 |
-31:42:32.2 |
HIP 80556 |
32.03 |
| 2026-03-29 00:00 |
16:27:53.89 |
-31:42:37.0 |
HIP 80556 |
31.86 |
| 2026-03-29 12:00 |
16:27:51.31 |
-31:42:41.6 |
HIP 80556 |
31.70 |
| 2026-03-30 00:00 |
16:27:48.67 |
-31:42:46.1 |
HIP 80556 |
31.54 |
| 2026-03-30 12:00 |
16:27:45.98 |
-31:42:50.4 |
HIP 80556 |
31.38 |
| 2026-03-31 00:00 |
16:27:43.24 |
-31:42:54.5 |
HIP 80556 |
31.22 |
| 2026-03-31 12:00 |
16:27:40.45 |
-31:42:58.4 |
HIP 80556 |
31.07 |
| 2026-04-01 00:00 |
16:27:37.61 |
-31:43:02.2 |
HIP 80556 |
30.92 |
| 2026-04-01 12:00 |
16:27:34.72 |
-31:43:05.8 |
HIP 80556 |
30.78 |
| 2026-04-02 00:00 |
16:27:31.77 |
-31:43:09.3 |
HIP 80556 |
30.65 |
| 2026-04-02 12:00 |
16:27:28.78 |
-31:43:12.5 |
HIP 80556 |
30.52 |
| 2026-04-03 00:00 |
16:27:25.74 |
-31:43:15.6 |
HIP 80556 |
30.39 |
| 2026-04-03 12:00 |
16:27:22.65 |
-31:43:18.6 |
HIP 80556 |
30.28 |
| 2026-04-04 00:00 |
16:27:19.50 |
-31:43:21.3 |
HIP 80556 |
30.18 |
| 2026-04-04 12:00 |
16:27:16.31 |
-31:43:23.9 |
HIP 80475 |
29.96 |
| 2026-04-05 00:00 |
16:27:13.07 |
-31:43:26.3 |
HIP 80475 |
29.45 |
| 2026-04-05 12:00 |
16:27:09.79 |
-31:43:28.6 |
HIP 80475 |
28.94 |
| 2026-04-06 00:00 |
16:27:06.45 |
-31:43:30.6 |
HIP 80475 |
28.43 |
| 2026-04-06 12:00 |
16:27:03.07 |
-31:43:32.5 |
HIP 80475 |
27.93 |
| 2026-04-07 00:00 |
16:26:59.64 |
-31:43:34.2 |
HIP 80475 |
27.44 |
| 2026-04-07 12:00 |
16:26:56.16 |
-31:43:35.7 |
HIP 80475 |
26.95 |
| 2026-04-08 00:00 |
16:26:52.63 |
-31:43:37.1 |
HIP 80475 |
26.47 |
| 2026-04-08 12:00 |
16:26:49.06 |
-31:43:38.3 |
HIP 80475 |
26.00 |
| 2026-04-09 00:00 |
16:26:45.44 |
-31:43:39.2 |
HIP 80475 |
25.54 |
| 2026-04-09 12:00 |
16:26:41.77 |
-31:43:40.1 |
HIP 80475 |
25.09 |
| 2026-04-10 00:00 |
16:26:38.06 |
-31:43:40.7 |
HIP 80475 |
24.66 |
| 2026-04-10 12:00 |
16:26:34.31 |
-31:43:41.1 |
HIP 80475 |
24.24 |
| 2026-04-11 00:00 |
16:26:30.50 |
-31:43:41.4 |
HIP 80475 |
23.84 |
| 2026-04-11 12:00 |
16:26:26.66 |
-31:43:41.5 |
HIP 80475 |
23.45 |
| 2026-04-12 00:00 |
16:26:22.76 |
-31:43:41.4 |
HIP 80475 |
23.09 |
| 2026-04-12 12:00 |
16:26:18.83 |
-31:43:41.1 |
HIP 80475 |
22.75 |
| 2026-04-13 00:00 |
16:26:14.85 |
-31:43:40.6 |
HIP 80475 |
22.44 |
| 2026-04-13 12:00 |
16:26:10.83 |
-31:43:40.0 |
HIP 80475 |
22.16 |
| 2026-04-14 00:00 |
16:26:06.76 |
-31:43:39.2 |
HIP 80475 |
21.90 |
| 2026-04-14 12:00 |
16:26:02.65 |
-31:43:38.1 |
HIP 80475 |
21.68 |
| 2026-04-15 00:00 |
16:25:58.50 |
-31:43:36.9 |
HIP 80475 |
21.49 |
| 2026-04-15 12:00 |
16:25:54.31 |
-31:43:35.5 |
HIP 80475 |
21.34 |
| 2026-04-16 00:00 |
16:25:50.07 |
-31:43:34.0 |
HIP 80475 |
21.23 |