Asteroids

2026BX4 help

Last update: 2026-02-04 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Atira

Perihelion (q)

0.768

Aphelion (Q)

0.982

Eccentricity (e)

0.122

Inclination (i)

20.0

deg

Orbit period (P)

299.0

Earth MOID

0.01418

U parameter

6.5

Next Earth close approach

Date

2026-02-16

Nominal distance (from Earth center)

0.01969

2945893

Maximum Brightness

18.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

170 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-20

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.875025

1-sigma variation

0.000046

Unit

Eccentricity (e)

Value

0.122039

1-sigma variation

0.000072

Unit

Inclination (i)

Value

19.9898

1-sigma variation

0.0558

Unit

Long. of Ascending Node (Ω)

Value

328.0925

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

341.0650

1-sigma variation

0.0492

Unit

Mean Anomaly (M)

Value

98.79232

1-sigma variation

0.05963

Unit

Perihelion distance

Value

0.768238

1-sigma variation

Unit

Aphelion distance

Value

0.981812

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.239757

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.014364

1-sigma variation

Unit

MOID

Value

0.014178

1-sigma variation

Unit

Orbit Period

Value

298.9711

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.10531E-9	-3.30226E-9	-2.55511E-6	3.74604E-8	2.24607E-6	-2.72658E-6
e	-3.30226E-9	5.18066E-9	4.01105E-6	-5.77133E-8	-3.52767E-6	4.28157E-6
i	-2.55511E-6	4.01105E-6	3.11225E-3	-4.19188E-5	-2.74180E-3	3.32574E-3
Ω	3.74604E-8	-5.77133E-8	-4.19188E-5	1.89352E-6	3.47885E-5	-4.31695E-5
ω	2.24607E-6	-3.52767E-6	-2.74180E-3	3.47885E-5	2.41894E-3	-2.93256E-3
M	-2.72658E-6	4.28157E-6	3.32574E-3	-4.31695E-5	-2.93256E-3	3.55596E-3

Date of computation: 2026-02-04 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

21.01

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

170 - 400*

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

[-]

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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

0.4

Unit

Source

[1]

Normalized RMS of residuals

Value

0.435967

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-20.53303

Unit

Source

[2]

Last Observation

Value

2026-02-04.201578

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

50 (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

Close Approaches for 2026BX4 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	1958-02-17 07:27	28.0	0.0934738	0.0740509	0.0064861
EARTH	1967-02-17 18:57	3.7	0.1348979	0.1157823	0.0063727
EARTH	1976-02-18 04:49	26.2	0.1925987	0.1772108	0.0051296
EARTH	1999-02-14 14:34	15.4	0.1647622	0.1638888	0.0002911
EARTH	2008-02-16 04:34	39.2	0.0861742	0.0782515	0.0026435
EARTH	2017-02-16 07:28	58.4	0.0240643	0.0158901	0.0032797
EARTH	2026-02-16 15:34	4.0	0.0196753	0.0195401	0.0000451
VENUS	2029-10-07 10:10	44.7	0.0467908	0.0432060	0.0013291
VENUS	2032-03-23 03:17	91.2	0.0499116	0.0440439	0.0022825
EARTH	2035-02-16 08:59	84.9	0.0659213	0.0531290	0.0042786
EARTH	2044-02-14 20:43	146.2	0.1799159	0.1623586	0.0058526
EARTH	2057-02-17 05:45	35.8	0.1720439	0.1539176	0.0060423
EARTH	2066-02-17 04:28	28.5	0.0537398	0.0386011	0.0051018
EARTH	2075-02-17 00:50	4.4	0.0148222	0.0142686	0.0001941
VENUS	2077-02-18 14:28	20.8	0.0388755	0.0387309	0.0000482
EARTH	2084-02-15 15:29	49.9	0.1445765	0.1339601	0.0035389
EARTH	2097-02-17 04:39	31.1	0.1515554	0.1283257	0.0077434
EARTH	2106-02-17 19:41	113.3	0.0152575	0.0131562	0.0047027
VENUS	2112-03-16 05:26	> 1 d	0.0463949	0.0359955	0.0316142

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
200.94428712	45.70273406	0.01418977	MINIMUM
23.56887211	234.97410304	0.23712575	MINIMUM
98.93913602	314.27215946	0.34000868	SADDLE
303.07745822	144.58415251	0.37070827	SADDLE
342.49745670	10.04027216	1.74687905	SADDLE
183.32179611	211.15604769	1.99499221	MAXIMUM

Download:

MOID Plots

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