Asteroids

1980 Tezcatlipoca help

Last update: 2025-12-11 09:12 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.086

Aphelion (Q)

2.333

Eccentricity (e)

0.365

Inclination (i)

26.9

deg

Orbit period (P)

816.3

Earth MOID

0.24504

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

13.8

mag

Diameter

5000 - 10000*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1950-06-19

Observatory

Palomar Mountain

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.709394

1-sigma variation

1.426E-9

Unit

Eccentricity (e)

Value

0.364706

1-sigma variation

2.152E-8

Unit

Inclination (i)

Value

26.8699

1-sigma variation

3.310E-6

Unit

Long. of Ascending Node (Ω)

Value

246.5426

1-sigma variation

6.158E-6

Unit

Arg. of Perihelion (ω)

Value

115.4725

1-sigma variation

7.859E-6

Unit

Mean Anomaly (M)

Value

211.49542

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.085968

1-sigma variation

Unit

Aphelion distance

Value

2.332820

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.742675

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.294592

1-sigma variation

Unit

MOID

Value

0.245041

1-sigma variation

Unit

Orbit Period

Value

816.3225

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.03362E-18	5.92253E-18	-3.78676E-16	-6.94438E-16	3.83446E-15	-7.02486E-15
e	5.92253E-18	4.63298E-16	-2.17846E-15	-4.18254E-16	-4.67957E-15	-1.76566E-14
i	-3.78676E-16	-2.17846E-15	1.09547E-11	5.01799E-12	-5.73643E-12	2.09636E-12
Ω	-6.94438E-16	-4.18254E-16	5.01799E-12	3.79206E-11	-3.56821E-11	3.75392E-12
ω	3.83446E-15	-4.67957E-15	-5.73643E-12	-3.56821E-11	6.17632E-11	-3.16273E-11
M	-7.02486E-15	-1.76566E-14	2.09636E-12	3.75392E-12	-3.16273E-11	4.05626E-11

Date of computation: 2025-12-11 09:12 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

263

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

13.803

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

5000 - 10000*

Unit

Source

[3]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 3. Skiff, Brian A et al.
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

27372

Unit

Source

[1]

Unobserved

Value

228

Unit

Source

[1]

Normalized RMS of residuals

Value

0.312779

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1950-06-19.29097

Unit

Source

[2]

Last Observation

Value

2025-05-27.994261

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

7955 (31)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
35.02021240	312.50029317	0.24504130	MINIMUM
308.28701965	186.76620564	0.48247940	MINIMUM
335.75683227	225.33456224	0.50867956	SADDLE
171.70978960	76.76783473	1.48583887	SADDLE
353.25105427	73.57137454	2.03340815	SADDLE
183.00975493	265.06655870	3.27479310	MAXIMUM

Download:

MOID Plots

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