Asteroids

2026FD4 help

Last update: 2026-03-25 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.957

Aphelion (Q)

1.646

Eccentricity (e)

0.265

Inclination (i)

4.3

deg

Orbit period (P)

542.1

Earth MOID

0.01816

U parameter

7.6

Next Earth close approach

Date

2029-03-14

Nominal distance (from Earth center)

0.18981

28394645

Maximum Brightness

26.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.7

mag

Diameter

8 - 17*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-03-22

Observatory

Kitt Peak-Bok

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

1.301201

1-sigma variation

0.000650

Unit

Eccentricity (e)

Value

0.264608

1-sigma variation

0.000417

Unit

Inclination (i)

Value

4.2562

1-sigma variation

0.0064

Unit

Long. of Ascending Node (Ω)

Value

177.7026

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

52.9379

1-sigma variation

0.0055

Unit

Mean Anomaly (M)

Value

22.41526

1-sigma variation

0.01547

Unit

Perihelion distance

Value

0.956893

1-sigma variation

Unit

Aphelion distance

Value

1.645509

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.048428

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.435163

1-sigma variation

Unit

MOID

Value

0.018164

1-sigma variation

Unit

Orbit Period

Value

542.1447

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.22204E-7	2.70677E-7	4.10302E-6	-8.91637E-8	3.54403E-6	-1.00360E-5
e	2.70677E-7	1.73536E-7	2.62906E-6	-5.74171E-8	2.27125E-6	-6.43304E-6
i	4.10302E-6	2.62906E-6	4.06749E-5	-7.21661E-7	3.51545E-5	-9.82687E-5
Ω	-8.91637E-8	-5.74171E-8	-7.21661E-7	4.70748E-8	-6.26308E-7	1.98951E-6
ω	3.54403E-6	2.27125E-6	3.51545E-5	-6.26308E-7	3.05657E-5	-8.49884E-5
M	-1.00360E-5	-6.43304E-6	-9.82687E-5	1.98951E-6	-8.49884E-5	2.39283E-4

Date of computation: 2026-03-25 13:01 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

27.696

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

8 - 17*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.478185

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-03-22.246733

Unit

Source

[2]

Last Observation

Value

2026-03-25.183511

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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 2026FD4 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	1983-07-12 07:50	> 1 d	0.1374225	0.0761402	0.0516593
EARTH	1986-05-18 06:06	> 1 mo	0.0830219	0.0760797	0.0159648
EARTH	1989-03-22 02:16	> 1 w	0.0776843	0.0145218	0.1810250
EARTH	2023-06-28 21:14	> 1 d	0.0761639	0.0760206	0.0006271
EARTH	2026-04-02 10:32	1.2	0.0203821	0.0202883	0.0000313
EARTH	2029-03-14 15:11	926.1	0.1898065	0.1477325	0.0140309
EARTH	2066-07-04 23:42	> 1 w	0.0833297	0.0747747	0.0652918
EARTH	2069-04-25 07:14	> 1 mo	0.0671525	0.0038771	0.0868045
EARTH	2072-03-21 06:43	> 1 w	0.0917389	0.0152481	0.1424773
EARTH	2112-07-06 06:26	> 1 mo	0.0841902	0.0745397	0.2956042
EARTH	2115-05-03 08:59	> 1 mo	0.0737580	0.0175841	0.2882530
EARTH	2118-03-24 15:22	> 1 mo	0.0736768	0.0169695	0.6255427

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
328.94733708	85.22063769	0.01816410	MINIMUM
34.83018586	170.82300503	0.07487763	MINIMUM
11.33896534	140.37687060	0.08393718	SADDLE
182.44589815	308.48086309	0.65997289	SADDLE
3.05238591	309.40498907	1.94586937	SADDLE
181.48243417	127.75924947	2.65450840	MAXIMUM

Download:

MOID Plots

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