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Solar
Asteroid Near-Earth

Morpheus

4197 Morpheus (1982 TA)

Where is it now

Distance from Sun
4.06 AU
True anomaly
182.04°
As of
29 August 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbital elements

Semi-major axis
2.296 AU
Eccentricity
0.7725
Inclination
12.61°
Orbital period
3.48 years
Perihelion
0.522 AU
Aphelion
4.069 AU
Longitude of ascending node
6.96°
Argument of periapsis
122.61°
Epoch · J2000
2461200.5

Physical properties

Mean radius
0.90 km
Rotation period
3.54 hours

Visual & observation

Geometric albedo
0.37
Absolute magnitude (H)
14.97
Spectral type
APO

Discovery & classification

Near-Earth Object Named

Sources