Asteroids

2026FH12 help

Last update: 2026-04-09 13:16 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.861

Aphelion (Q)

4.855

Eccentricity (e)

0.699

Inclination (i)

8.0

deg

Orbit period (P)

1764.9

Earth MOID

0.00704

U parameter

7.6

Next Earth close approach

Date

2026-04-28

Nominal distance (from Earth center)

0.13909

20808187

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.8

mag

Diameter

120 - 260*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-03-27

Observatory

Mt. Lemmon Survey

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

2.858166

1-sigma variation

0.004526

Unit

Eccentricity (e)

Value

0.698701

1-sigma variation

0.000498

Unit

Inclination (i)

Value

8.0462

1-sigma variation

0.0062

Unit

Long. of Ascending Node (Ω)

Value

139.0998

1-sigma variation

0.0180

Unit

Arg. of Perihelion (ω)

Value

126.2468

1-sigma variation

0.0167

Unit

Mean Anomaly (M)

Value

1.63931

1-sigma variation

0.00283

Unit

Perihelion distance

Value

0.861162

1-sigma variation

Unit

Aphelion distance

Value

4.855170

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.506296

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.021393

1-sigma variation

Unit

MOID

Value

0.007038

1-sigma variation

Unit

Orbit Period

Value

1764.9388

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.04839E-5	2.25551E-6	2.81081E-5	8.10323E-5	-7.50755E-5	-1.28153E-5
e	2.25551E-6	2.48358E-7	3.09472E-6	8.92078E-6	-8.26459E-6	-1.41107E-6
i	2.81081E-5	3.09472E-6	3.86319E-5	1.11567E-4	-1.03419E-4	-1.75957E-5
Ω	8.10323E-5	8.92078E-6	1.11567E-4	3.22846E-4	-2.99453E-4	-5.07567E-5
ω	-7.50755E-5	-8.26459E-6	-1.03419E-4	-2.99453E-4	2.77857E-4	4.70302E-5
M	-1.28153E-5	-1.41107E-6	-1.75957E-5	-5.07567E-5	4.70302E-5	8.01980E-6

Date of computation: 2026-04-09 13:16 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

21.801

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

120 - 260*

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

0.3

Unit

Source

[1]

Normalized RMS of residuals

Value

0.571893

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-03-14.252684

Unit

Source

[2]

Last Observation

Value

2026-04-09.339329

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (0)

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 2026FH12 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	1959-08-02 20:09	> 1 w	0.1469859	0.0097232	0.0929201
EARTH	1997-06-05 21:50	> 1 mo	0.1957744	0.1923122	0.0169416
EARTH	2026-04-28 16:30	< 1 min	0.1390941	0.1388005	0.0000979
EARTH	2055-04-14 08:07	> 1 w	0.1706963	0.1405162	0.2091224
EARTH	2074-08-30 16:02	> 1 w	0.1812238	0.0317888	0.4334915
EARTH	2093-04-13 15:34	644.4	0.1595415	0.1564817	0.0040866
EARTH	2107-04-09 08:56	> 1 w	0.1743596	0.1508467	0.1479550

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
22.75540712	212.55489309	0.00703822	MINIMUM
337.80089198	109.95569925	0.13730599	MINIMUM
357.07293894	153.74392676	0.18976745	SADDLE
0.06926862	341.02235453	1.84262265	SADDLE
179.92344392	341.24501407	3.87867043	SADDLE
180.16090661	161.34697385	5.86575852	MAXIMUM

Download:

MOID Plots

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