Asteroids

2026BB help

Last update: 2026-01-22 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.647

Aphelion (Q)

1.110

Eccentricity (e)

0.264

Inclination (i)

3.9

deg

Orbit period (P)

300.7

Earth MOID

0.00140

U parameter

5.2

Next Earth close approach

Date

2029-10-14

Nominal distance (from Earth center)

0.07457

11155867

Maximum Brightness

27.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

29.7

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-16

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

0.878474

1-sigma variation

0.000006

Unit

Eccentricity (e)

Value

0.263730

1-sigma variation

0.000026

Unit

Inclination (i)

Value

3.8985

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

115.8656

1-sigma variation

7.041E-6

Unit

Arg. of Perihelion (ω)

Value

131.1974

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

187.42929

1-sigma variation

0.00175

Unit

Perihelion distance

Value

0.646794

1-sigma variation

Unit

Aphelion distance

Value

1.110154

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.005288

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.321267

1-sigma variation

Unit

MOID

Value

0.001404

1-sigma variation

Unit

Orbit Period

Value

300.7406

1-sigma variation

Unit

U parameter

Value

5.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.86548E-11	-1.63268E-10	-2.70414E-9	-3.41288E-11	-2.34951E-9	-1.07074E-8
e	-1.63268E-10	6.92225E-10	1.15047E-8	1.46747E-10	9.79558E-9	4.56839E-8
i	-2.70414E-9	1.15047E-8	1.94373E-7	2.64667E-9	1.60301E-7	7.63388E-7
Ω	-3.41288E-11	1.46747E-10	2.64667E-9	4.95696E-11	1.94088E-9	9.89621E-9
ω	-2.34951E-9	9.79558E-9	1.60301E-7	1.94088E-9	1.49088E-7	6.28367E-7
M	-1.07074E-8	4.56839E-8	7.63388E-7	9.89621E-9	6.28367E-7	3.04626E-6

Date of computation: 2026-01-22 13:00 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

29.745

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

3 - 7*

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

1.0

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.694102

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-16.270048

Unit

Source

[2]

Last Observation

Value

2026-01-17.24266

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

44 (4)

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 2026BB 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	1957-01-16 11:08	> 1 mo	0.1652876	0.0023135	4.7116719
VENUS	1958-10-12 21:34	> 1 mo	0.0302703	0.0083745	5.0595724
EARTH	1961-01-17 06:40	> 1 w	0.0085560	0.0007548	0.4551717
EARTH	1964-11-12 05:02	> 1 mo	0.1208072	0.0970014	0.0608405
EARTH	1968-10-18 20:16	> 1 d	0.1807343	0.1251990	0.0186552
VENUS	1974-03-01 02:42	> 1 w	0.0243167	0.0088282	0.2371487
EARTH	1978-01-11 00:50	> 1 d	0.0610624	0.0054210	0.0433578
EARTH	1981-10-31 22:47	> 1 mo	0.1045686	0.0826256	0.0817856
VENUS	1989-07-16 21:11	> 1 mo	0.0342765	0.0089948	0.7234091
EARTH	1995-01-16 16:07	> 1 mo	0.0228488	0.0011426	0.3618688
EARTH	1998-11-07 05:58	> 1 mo	0.1135474	0.0779058	0.0891047
VENUS	2004-12-03 17:37	> 1 w	0.0171716	0.0096194	0.1115592
EARTH	2012-01-17 23:52	47.9	0.0023097	0.0013220	0.0006696
EARTH	2020-10-30 15:21	124.0	0.1116956	0.1113737	0.0001075
EARTH	2026-01-17 12:11	< 1 s	0.0014752	0.0014747	0.0000002
EARTH	2029-10-14 06:23	2.1	0.0745724	0.0739873	0.0001958
EARTH	2035-01-18 13:37	< 1 min	0.0454318	0.0440594	0.0004575
EARTH	2038-10-15 20:34	17.8	0.0518854	0.0517306	0.0000550
EARTH	2044-01-17 07:04	11.6	0.1403539	0.1395439	0.0002700
EARTH	2047-10-30 06:01	105.4	0.0968696	0.0963763	0.0001646
VENUS	2052-07-09 20:13	19.5	0.0295346	0.0291914	0.0001156
VENUS	2054-12-21 02:41	17.2	0.0336120	0.0334212	0.0000638
EARTH	2056-11-09 13:18	7.8	0.1162689	0.1161974	0.0000238
EARTH	2065-11-19 15:06	113.1	0.1270019	0.1269618	0.0000134
VENUS	2067-01-24 06:43	35.4	0.0072034	0.0066163	0.0002021
VENUS	2069-07-16 08:58	161.6	0.0379139	0.0366205	0.0004313
EARTH	2071-01-16 18:01	25.5	0.1426154	0.1405163	0.0006997
EARTH	2074-10-12 13:47	1.9	0.0715731	0.0691368	0.0008296
EARTH	2079-12-19 22:11	739.5	0.1208572	0.1193599	0.0004999
VENUS	2082-01-16 12:01	219.2	0.0245354	0.0244851	0.0000981
EARTH	2088-10-11 19:52	57.1	0.0585094	0.0543040	0.0018916
EARTH	2093-12-11 12:46	> 1 d	0.1324476	0.1278005	0.0015606
EARTH	2099-01-17 22:50	294.4	0.1067559	0.0796139	0.0090480
EARTH	2102-10-15 01:12	330.0	0.1440809	0.1196510	0.0082810
EARTH	2107-11-18 00:14	> 1 d	0.1324276	0.1275441	0.0016569
EARTH	2113-01-19 05:05	100.5	0.0194987	0.0032540	0.0056006
VENUS	2115-08-28 04:44	1240.8	0.0447733	0.0063106	0.0131972
EARTH	2116-10-15 06:45	281.0	0.1223888	0.0786551	0.0156679
EARTH	2122-01-10 11:49	> 1 d	0.0692280	0.0180940	0.0172936
EARTH	2125-10-17 10:04	616.2	0.1760904	0.1357690	0.0136382

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
242.75466809	15.41366615	0.00140418	MINIMUM
119.94879365	279.12054221	0.06743259	MINIMUM
178.04250433	324.84083114	0.13491107	SADDLE
1.75538859	147.28563672	0.37070205	SADDLE
2.60065592	328.44312459	1.63257846	SADDLE
181.99712312	147.83550465	2.12478126	MAXIMUM

Download:

MOID Plots

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