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Minor planet follow-up portal
v. 3.17.1a
11398 (1998 YP11)
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Data
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Schedule Spectroscopic Observations
Type
NEO (Amor)
Status
Actively Following
Characterization Target
Source
LCOGT
UTC date
------------ Any 1.0m ------------
LSC 1.0m - W85-87; (CTIO, Chile)
ELP 1.0m - V37,V39; (McDonald, Texas)
COJ 1.0m - Q63-64; (Siding Spring, Aust.)
CPT 1.0m - K91-93; (Sutherland, S. Africa)
TFN 1.0m - Z31,Z24; (Tenerife, Spain)
------------ Any 0.4m ------------
LSC 0.4m - W89,W79; (CTIO, Chile)
ELP 0.4m - V38; (McDonald, Texas)
ELP 0.4m - V98; (TEMP; McDonald, Texas)
ELP 0.4m - V99; (TEMP; McDonald, Texas)
OGG 0.4m - T03-04; (Maui, Hawaii)
COJ 0.4m - Q58-59; (Siding Spring, Aust.)
CPT 0.4m - L09; (Sutherland, S. Africa)
TFN 0.4m - Z17,Z21; (Tenerife, Spain)
------------ Any 2.0m ------------
FTS 2.0m - E10; (Siding Spring, Aust.) [MuSCAT4]
FTN 2.0m - F65; (Maui, Hawaii ) [MuSCAT3]
------------ Non LCO ------------
Mt John 1.8m - 474 (Mt John, NZ)
Site
Min Altitude
Check Spectroscopic Feasibility
Create LC Plot
Recent Blocks Scheduled
2026-01-14T04:50:00
2026-01-14T11:12:00
ELP
Req: 4083006
2026-01-14T04:50:00
2026-01-14T11:12:00
ELP
Req: 4083007
2026-01-17T04:34:00
2026-01-17T11:00:00
ELP
Req: 4085389
2026-01-17T04:34:00
2026-01-17T11:00:00
ELP
Req: 4085388
Measurements
Show Measurements
Plot Visibility
Last Update: 2026-Jan-25 07:58
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
61065.0
Jan. 25, 2026
Orbital inclination in deg
15.02188
Longitude of Ascending Node (deg)
144.71039
Arg of perihelion (deg)
74.77447
Eccentricity
0.3890496
Mean distance (AU)
1.7209187
Mean Anomaly (deg)
310.05024
Absolute Magnitude (H)
16.44
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
1830
Diameter in meters
(range)
884 - 6847
Physical Parameters
Albedo
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)
0.318
+/- 0.095
Rotation Period
REFERENCE LIST:[Pravec, P.; et al. (2005) Icarus 173, 108-131.], [Warner, B.D. (2008) Minor Planet Bull. 35, 163-167.], [Warner, B.D. (2017) Minor Planet Bull. 44, 223-237.], [Warner, B.D. (2017) Minor Planet Bull. 44, 335-344.]
LCDB (Rev. 2023-October); Warner et al., 2009
38.6 h
Diameter
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)
1.316 km
+/- 0.349
Absolute Magnitude
E2024-TN4
16.38
Follow-up Details
Number of observations
2930
Arc length (days)
7670.00
Time since last observation (days)
2595.88
Spectroscopy Details
(Plots)
SMASS Spectra
NIR
Known Taxonomies
None
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