Asteroids

7474 1992TC help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.108

Aphelion (Q)

2.023

Eccentricity (e)

0.292

Inclination (i)

7.1

deg

Orbit period (P)

715.6

Earth MOID

0.16719

U parameter

0.2

Next Earth close approach

Date

2041-10-03

Nominal distance (from Earth center)

0.1992

29800363

Maximum Brightness

16.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.1

mag

Diameter

800

Taxonomic type

Rotation period (T)

5.540

Discovery Information

Discovery Date

1992-10-01

Observatory

Siding Spring Observatory

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.565689

1-sigma variation

6.862E-9

Unit

Eccentricity (e)

Value

0.292080

1-sigma variation

8.672E-8

Unit

Inclination (i)

Value

7.0882

1-sigma variation

3.443E-6

Unit

Long. of Ascending Node (Ω)

Value

88.6029

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

275.6513

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

71.41742

1-sigma variation

0.00005

Unit

Perihelion distance

Value

1.108383

1-sigma variation

Unit

Aphelion distance

Value

2.022995

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.407799

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.458525

1-sigma variation

Unit

MOID

Value

0.167186

1-sigma variation

Unit

Orbit Period

Value

715.5776

1-sigma variation

Unit

U parameter

Value

0.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.70906E-17	-4.47883E-16	2.89510E-16	6.61584E-15	1.71166E-13	-3.62405E-13
e	-4.47883E-16	7.52085E-15	-2.20984E-15	-9.86760E-14	-1.39957E-12	3.20373E-12
i	2.89510E-16	-2.20984E-15	1.18529E-11	-1.02543E-10	1.02693E-10	-1.92942E-12
Ω	6.61584E-15	-9.86760E-14	-1.02543E-10	2.55925E-9	-2.52118E-9	-4.23956E-11
ω	1.71166E-13	-1.39957E-12	1.02693E-10	-2.52118E-9	3.19596E-9	-1.37166E-9
M	-3.62405E-13	3.20373E-12	-1.92942E-12	-4.23956E-11	-1.37166E-9	2.84905E-9

Date of computation: 2026-06-04 23:11 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

5.540

Unit

Source

[2]

Quality

Value

Unit

Source

[2]

Amplitude

Value

0.07

Unit

mag

Source

[2]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[1]

Taxonomy (all)

Value

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.076

18.3

Unit

mag

Source

[3]

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

medium

Unit

Source

[4]

Diameter

Value

800

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Unit

Source

[1]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Xu, S. et al. (1995) Icarus 115, 1-15. (Small main-belt asteroid spectroscopic survey: initial results)
[2]	EARN	1.) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322, 7474, 1989VA)
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

12732

Unit

Source

[1]

Unobserved

Value

342

Unit

Source

[1]

Normalized RMS of residuals

Value

0.636772

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1990-08-19.48785

Unit

Source

[2]

Last Observation

Value

2025-06-28.661909

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

578 (8)

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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 7474 1992TC from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1992-09-26 04:26	< 1 min	0.1687937	0.1687934	0.0000001
EARTH	2041-10-03 02:10	< 1 min	0.1992031	0.1992002	0.0000010
EARTH	2088-09-28 09:50	< 1 min	0.1772659	0.1772634	0.0000008

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
359.94498263	263.80151491	0.16727965	MINIMUM
178.23001877	81.17074929	1.03947412	SADDLE
357.06275683	79.86446699	2.10246541	SADDLE
178.47570494	261.35124258	3.02093493	MAXIMUM

Download:

MOID Plots

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