Asteroids

39565 1992SL help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.093

Aphelion (Q)

2.191

Eccentricity (e)

0.334

Inclination (i)

8.6

deg

Orbit period (P)

768.5

Earth MOID

0.09178

U parameter

0.0

Next Earth close approach

Date

2053-09-13

Nominal distance (from Earth center)

0.09313

13932382

Maximum Brightness

14.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.4

mag

Diameter

600 - 1300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1992-09-24

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

1.641933

1-sigma variation

1.304E-9

Unit

Eccentricity (e)

Value

0.334234

1-sigma variation

4.121E-8

Unit

Inclination (i)

Value

8.5974

1-sigma variation

5.435E-6

Unit

Long. of Ascending Node (Ω)

Value

0.9389

1-sigma variation

2.038E-5

Unit

Arg. of Perihelion (ω)

Value

344.7745

1-sigma variation

2.083E-5

Unit

Mean Anomaly (M)

Value

283.42836

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.093144

1-sigma variation

Unit

Aphelion distance

Value

2.190722

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.099156

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.155357

1-sigma variation

Unit

MOID

Value

0.091785

1-sigma variation

Unit

Orbit Period

Value

768.4784

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.70035E-18	-1.72817E-17	-1.11021E-16	-1.86608E-15	3.68999E-15	-6.06134E-15
e	-1.72817E-17	1.69846E-15	-1.69569E-14	6.47568E-14	-2.45099E-14	3.58728E-14
i	-1.11021E-16	-1.69569E-14	2.95341E-11	2.11282E-11	-1.99070E-11	-2.69189E-12
Ω	-1.86608E-15	6.47568E-14	2.11282E-11	4.15310E-10	-4.05014E-10	-1.11695E-12
ω	3.68999E-15	-2.45099E-14	-1.99070E-11	-4.05014E-10	4.33870E-10	-3.16619E-11
M	-6.06134E-15	3.58728E-14	-2.69189E-12	-1.11695E-12	-3.16619E-11	4.73030E-11

Date of computation: 2025-09-10 00:30 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

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.373

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

600 - 1300*

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.6136

Unit

g-r

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

27140

Unit

Source

[1]

Unobserved

Value

211

Unit

Source

[1]

Normalized RMS of residuals

Value

0.618623

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1950-12-09.42153

Unit

Source

[2]

Last Observation

Value

2025-03-30.406785

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

436 (6)

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

Close Approaches for 39565 1992SL from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-09-18 08:21	< 1 min	0.1180645	0.1180634	0.0000003
EARTH	1992-09-10 16:18	< 1 min	0.1049333	0.1049329	0.0000001
EARTH	2013-09-23 10:24	< 1 min	0.1798169	0.1798166	0.0000001
EARTH	2053-09-13 22:24	< 1 min	0.0931322	0.0931320	0.0000001
EARTH	2114-09-16 17:46	< 1 min	0.0918725	0.0918722	0.0000001

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
4.21735265	250.36981435	0.09254551	MINIMUM
178.14017083	61.97653419	1.19974010	SADDLE
357.40174143	60.75041003	2.08476402	SADDLE
179.22993493	242.73079109	3.19731601	MAXIMUM

Download:

MOID Plots

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