Asteroids

2026BK5 help

Last update: 2026-02-10 13:02 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.912

Aphelion (Q)

2.342

Eccentricity (e)

0.440

Inclination (i)

6.9

deg

Orbit period (P)

758.0

Earth MOID

0.02893

U parameter

7.5

Next Earth close approach

Date

2027-08-27

Nominal distance (from Earth center)

0.06611

9889217

Maximum Brightness

17.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.7

mag

Diameter

190 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-19

Observatory

Pan-STARRS 1, Haleakala

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

1.627002

1-sigma variation

0.000891

Unit

Eccentricity (e)

Value

0.439542

1-sigma variation

0.000090

Unit

Inclination (i)

Value

6.8999

1-sigma variation

0.0157

Unit

Long. of Ascending Node (Ω)

Value

173.8912

1-sigma variation

0.0374

Unit

Arg. of Perihelion (ω)

Value

211.3098

1-sigma variation

0.0871

Unit

Mean Anomaly (M)

Value

35.52378

1-sigma variation

0.12185

Unit

Perihelion distance

Value

0.911866

1-sigma variation

Unit

Aphelion distance

Value

2.342138

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.106673

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.051464

1-sigma variation

Unit

MOID

Value

0.028930

1-sigma variation

Unit

Orbit Period

Value

758.0198

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.93760E-7	-7.18913E-8	-1.38539E-5	3.31621E-5	7.73924E-5	-1.08325E-4
e	-7.18913E-8	8.17814E-9	1.32744E-6	-3.14621E-6	-7.26625E-6	1.01380E-5
i	-1.38539E-5	1.32744E-6	2.45019E-4	-5.85194E-4	-1.36189E-3	1.90505E-3
Ω	3.31621E-5	-3.14621E-6	-5.85194E-4	1.39839E-3	3.25484E-3	-4.55396E-3
ω	7.73924E-5	-7.26625E-6	-1.36189E-3	3.25484E-3	7.58601E-3	-1.06124E-2
M	-1.08325E-4	1.01380E-5	1.90505E-3	-4.55396E-3	-1.06124E-2	1.48480E-2

Date of computation: 2026-02-10 13:02 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

20.681

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

190 - 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

[-]

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

0.522664

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-19.543043

Unit

Source

[2]

Last Observation

Value

2026-02-10.39889

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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 2026BK5 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	1971-08-22 16:01	> 1 d	0.1073478	0.0363906	0.0552929
EARTH	1973-11-25 16:03	> 1 w	0.1125101	0.1097543	0.0116526
EARTH	2000-09-19 23:47	> 1 mo	0.0654679	0.0393189	0.0652802
EARTH	2027-08-27 13:28	> 1 d	0.0661053	0.0405797	0.0092850
EARTH	2029-12-03 15:29	> 1 d	0.1282406	0.1136997	0.0094825
EARTH	2056-09-30 05:21	> 1 mo	0.0842853	0.0567234	0.0547446
EARTH	2083-08-27 03:42	> 1 w	0.0726277	0.0304299	0.1073433
EARTH	2085-12-02 03:35	> 1 w	0.1221164	0.1122663	0.0380409
EARTH	2112-09-17 10:07	> 1 mo	0.0550865	0.0324884	0.1070034

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
332.12919202	241.48809113	0.02892995	MINIMUM
17.85202379	312.74012705	0.10905664	MINIMUM
11.74869714	303.31110407	0.10936563	SADDLE
179.72240076	103.12554388	1.34081382	SADDLE
358.19699881	101.90381738	1.91556320	SADDLE
178.94060920	282.64173407	3.33756896	MAXIMUM

Download:

MOID Plots

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