Asteroids

2026FL4 help

Last update: 2026-03-26 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.709

Aphelion (Q)

4.686

Eccentricity (e)

0.737

Inclination (i)

1.7

deg

Orbit period (P)

1618.1

Earth MOID

0.00883

U parameter

8.3

Next Earth close approach

Date

2053-04-05

Nominal distance (from Earth center)

0.03273

4895682

Maximum Brightness

23.3

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-03-23

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

2.697310

1-sigma variation

0.010668

Unit

Eccentricity (e)

Value

0.737126

1-sigma variation

0.001145

Unit

Inclination (i)

Value

1.6861

1-sigma variation

0.0016

Unit

Long. of Ascending Node (Ω)

Value

24.3332

1-sigma variation

0.0087

Unit

Arg. of Perihelion (ω)

Value

233.8187

1-sigma variation

0.0058

Unit

Mean Anomaly (M)

Value

6.83883

1-sigma variation

0.03514

Unit

Perihelion distance

Value

0.709053

1-sigma variation

Unit

Aphelion distance

Value

4.685567

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.179187

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.143823

1-sigma variation

Unit

MOID

Value

0.008832

1-sigma variation

Unit

Orbit Period

Value

1618.0606

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.13816E-4	1.22140E-5	1.67460E-5	8.84266E-5	-5.73965E-5	-3.74856E-4
e	1.22140E-5	1.31072E-6	1.79690E-6	9.49214E-6	-6.16158E-6	-4.02270E-5
i	1.67460E-5	1.79690E-6	2.48839E-6	1.26068E-5	-8.10457E-6	-5.51482E-5
Ω	8.84266E-5	9.49214E-6	1.26068E-5	7.54020E-5	-5.01988E-5	-2.91321E-4
ω	-5.73965E-5	-6.16158E-6	-8.10457E-6	-5.01988E-5	3.36967E-5	1.89105E-4
M	-3.74856E-4	-4.02270E-5	-5.51482E-5	-2.91321E-4	1.89105E-4	1.23460E-3

Date of computation: 2026-03-26 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

26.892

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

11 - 25*

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

0.454956

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-03-21.245244

Unit

Source

[2]

Last Observation

Value

2026-03-26.167756

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2026FL4 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
JUPITER	1953-10-14 13:58	> 1 mo	0.4560627	0.0901191	68.6403091
EARTH	1986-09-02 02:24	> 1 mo	0.1804239	0.0327500	285.5301775
VENUS	1990-12-13 13:15	> 1 mo	0.0016977	0.0016148	0.1608943
EARTH	2026-03-28 10:03	< 1 min	0.0124428	0.0123895	0.0000178
VENUS	2035-03-28 22:53	> 1 mo	0.0109353	0.0044166	0.2264716
EARTH	2053-04-05 02:57	> 1 mo	0.0327256	0.0030208	8.5457922
MARS	2066-08-16 03:18	> 1 mo	0.0430744	0.0292607	16.5770505
EARTH	2071-03-22 09:24	> 1 mo	0.0835768	0.0018833	39.1452429
VENUS	2075-10-10 15:22	> 1 mo	0.0257606	0.0250892	4.3930987
EARTH	2115-08-22 11:15	> 1 mo	0.1193677	0.0017268	90.3806938

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
328.76672053	81.41075289	0.00883224	MINIMUM
32.04063873	227.31964066	0.02387072	MINIMUM
0.60704557	154.71485848	0.30678834	SADDLE
0.53532151	334.54423807	1.69408447	SADDLE
180.08685329	333.86075296	3.70072752	SADDLE
180.07970219	153.86065947	5.70043740	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026FL4

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2109-03-29.930	91443.930	-4.753	0.98 ± 0.153	1.40E5	7.06E-11	1.79E-1	-11.15
2112-08-24.794	92687.794	-2.117	0.41 ± 0.051	5.56E5	1.67E-7	1.89E-1	-7.77
2116-04-07.096	94009.096	1.424	0.65 ± 0.145	7.35E5	3.82E-7	2.01E-1	-7.41
2116-04-07.148	94009.148	1.418	0.95 ± 0.134	7.61E5	2.62E-7	2.00E-1	-7.58


Based on 13 optical observations (of which 0 are rejected as outliers) from 2026/03/21.245 to 2026/03/23.977.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.18 and 1.18 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260324 233558.980 UTC.

Download this part as:

Download Impactor Table as: