Asteroids

2026SF help

Last update: 2026-09-19 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.603

Aphelion (Q)

1.448

Eccentricity (e)

0.412

Inclination (i)

17.1

deg

Orbit period (P)

379.3

Earth MOID

0.01145

U parameter

7.9

Next Earth close approach

Date

2046-02-08

Nominal distance (from Earth center)

0.18029

26970507

Maximum Brightness

26.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-16

Observatory

MARGO, Nauchnyi

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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.025456

1-sigma variation

0.000528

Unit

Eccentricity (e)

Value

0.411700

1-sigma variation

0.000668

Unit

Inclination (i)

Value

17.0743

1-sigma variation

0.0333

Unit

Long. of Ascending Node (Ω)

Value

173.9008

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

65.6618

1-sigma variation

0.0189

Unit

Mean Anomaly (M)

Value

161.93122

1-sigma variation

0.17890

Unit

Perihelion distance

Value

0.603276

1-sigma variation

Unit

Aphelion distance

Value

1.447636

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.265668

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.021642

1-sigma variation

Unit

MOID

Value

0.011449

1-sigma variation

Unit

Orbit Period

Value

379.2922

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.78719E-7	3.52804E-7	1.75602E-5	6.70664E-7	9.97533E-6	-9.44453E-5
e	3.52804E-7	4.46661E-7	2.22333E-5	8.49149E-7	1.26208E-5	-1.19553E-4
i	1.75602E-5	2.22333E-5	1.10675E-3	4.22698E-5	6.28071E-4	-5.95061E-3
Ω	6.70664E-7	8.49149E-7	4.22698E-5	1.61442E-6	2.39866E-5	-2.27267E-4
ω	9.97533E-6	1.26208E-5	6.28071E-4	2.39866E-5	3.57458E-4	-3.37991E-3
M	-9.44453E-5	-1.19553E-4	-5.95061E-3	-2.27267E-4	-3.37991E-3	3.20034E-2

Date of computation: 2026-09-19 13:15 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

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

26.184

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

15 - 30*

Unit

Source

[2]

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]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

0.5

Unit

Source

[1]

Normalized RMS of residuals

Value

0.601394

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-16.357138

Unit

Source

[2]

Last Observation

Value

2026-09-19.305904

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

37 (1)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026SF 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
VENUS	1955-09-13 09:52	> 1 w	0.0329064	0.0248221	0.1074583
EARTH	1968-02-11 15:09	> 1 w	0.1722363	0.1696781	0.0333782
EARTH	1974-09-12 12:26	> 1 d	0.1296636	0.0134528	0.3198212
EARTH	1975-09-19 06:35	> 1 w	0.1120506	0.0113626	0.3362395
EARTH	1994-02-13 14:46	> 1 mo	0.1694227	0.1693916	0.0012358
EARTH	2000-09-12 12:16	> 1 d	0.0923183	0.0113476	0.3742052
EARTH	2001-09-20 09:04	> 1 w	0.1519928	0.0109232	0.3518626
VENUS	2012-12-01 05:56	> 1 d	0.0241958	0.0237121	0.0144766
EARTH	2020-02-19 22:05	> 1 d	0.1806785	0.1715118	0.0091919
VENUS	2026-06-11 14:36	98.6	0.0481654	0.0444948	0.0012501
EARTH	2026-09-14 21:25	< 1 min	0.0201106	0.0200037	0.0000356
VENUS	2043-01-24 01:21	> 1 d	0.0274242	0.0240703	0.0443204
EARTH	2046-02-08 23:37	> 1 w	0.1802867	0.1707862	0.0432010
EARTH	2052-09-12 18:41	> 1 d	0.1988247	0.0200730	0.2235604
EARTH	2053-09-16 08:03	> 1 w	0.0376012	0.0105792	0.2363271
EARTH	2072-02-06 15:59	> 1 w	0.1990266	0.1700966	0.0847606
EARTH	2078-09-13 07:34	> 1 d	0.1997021	0.0172581	0.2628755
EARTH	2079-09-17 03:17	> 1 w	0.0439021	0.0103848	0.2783680
VENUS	2086-09-29 12:41	> 1 w	0.0324484	0.0230694	0.1311597
EARTH	2098-02-19 12:00	> 1 d	0.1785248	0.1686366	0.0170362
EARTH	2104-09-16 22:14	> 1 d	0.0308129	0.0099393	0.1427154
EARTH	2122-02-12 04:21	> 1 w	0.1714119	0.1657482	0.0245931
VENUS	2124-04-10 21:25	> 1 w	0.0382947	0.0231700	0.1240392

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
87.98596380	249.99663841	0.01144905	MINIMUM
288.56241097	40.88369749	0.16996251	MINIMUM
8.39109207	148.23226451	0.46472205	SADDLE
187.80870695	321.23881160	0.56597763	SADDLE
4.24885366	321.45944747	1.57604480	SADDLE
179.20012559	135.55363874	2.43634909	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out