Asteroids

2026TN1 help

Last update: 2026-10-06 13:16 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.885

Aphelion (Q)

1.247

Eccentricity (e)

0.170

Inclination (i)

30.3

deg

Orbit period (P)

401.9

Earth MOID

0.01527

U parameter

7.9

Next Earth close approach

Date

2036-03-31

Nominal distance (from Earth center)

0.13408

20058133

Maximum Brightness

23.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

23 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-04

Observatory

University of Arizona Catalina Sky 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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.065781

1-sigma variation

0.000538

Unit

Eccentricity (e)

Value

0.169952

1-sigma variation

0.000314

Unit

Inclination (i)

Value

30.2653

1-sigma variation

0.0823

Unit

Long. of Ascending Node (Ω)

Value

191.1888

1-sigma variation

0.0026

Unit

Arg. of Perihelion (ω)

Value

96.4583

1-sigma variation

0.1104

Unit

Mean Anomaly (M)

Value

139.03919

1-sigma variation

0.19215

Unit

Perihelion distance

Value

0.884649

1-sigma variation

Unit

Aphelion distance

Value

1.246913

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.056749

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.016226

1-sigma variation

Unit

MOID

Value

0.015272

1-sigma variation

Unit

Orbit Period

Value

401.8838

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.89414E-7	1.68952E-7	4.08014E-5	1.29266E-6	5.92590E-5	-1.03317E-4
e	1.68952E-7	9.86942E-8	2.39665E-5	7.59312E-7	3.45538E-5	-6.02834E-5
i	4.08014E-5	2.39665E-5	6.76976E-3	2.14553E-4	8.12540E-3	-1.43675E-2
Ω	1.29266E-6	7.59312E-7	2.14553E-4	6.79977E-6	2.57410E-4	-4.55174E-4
ω	5.92590E-5	3.45538E-5	8.12540E-3	2.57410E-4	1.21861E-2	-2.11994E-2
M	-1.03317E-4	-6.02834E-5	-1.43675E-2	-4.55174E-4	-2.11994E-2	3.69214E-2

Date of computation: 2026-10-06 13:16 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

25.359

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

23 - 50*

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

0.5

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.434265

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.42134

Unit

Source

[2]

Last Observation

Value

2026-10-04.96395

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026TN1 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	1950-09-30 15:16	> 1 mo	0.1196711	0.0150928	1.2738300
EARTH	1960-03-30 14:01	> 1 d	0.1448775	0.0447415	0.2848782
EARTH	1961-10-03 17:26	> 1 d	0.0154476	0.0149332	0.0345123
EARTH	1971-04-02 00:58	> 1 d	0.0805997	0.0536398	0.1274114
EARTH	1972-10-05 18:26	> 1 d	0.0690372	0.0146780	0.1724625
EARTH	1982-04-03 08:27	> 1 d	0.0564687	0.0534499	0.0387943
EARTH	1983-10-09 09:45	> 1 d	0.1539955	0.0129000	0.1239000
EARTH	1993-04-04 11:49	> 1 d	0.1317557	0.0567300	0.1020747
EARTH	2015-10-01 02:23	> 1 d	0.1182010	0.0143626	0.0494973
EARTH	2025-03-30 18:26	130.9	0.1573414	0.1409554	0.0054796
EARTH	2026-10-03 18:46	2.0	0.0220406	0.0218375	0.0000677
EARTH	2036-03-31 01:32	> 1 d	0.1340803	0.0554087	0.0402806
EARTH	2037-10-04 00:31	> 1 d	0.0142640	0.0140513	0.0072974
EARTH	2047-03-31 11:57	> 1 w	0.1480491	0.0563979	0.5037191
EARTH	2048-10-03 07:40	> 1 w	0.0230010	0.0137862	0.4977372
EARTH	2059-10-01 04:15	> 1 w	0.1210706	0.0128958	0.4552325
EARTH	2081-04-04 16:53	> 1 d	0.1293180	0.0574892	0.1161254
EARTH	2092-04-03 01:30	> 1 d	0.0538123	0.0515505	0.1113327
EARTH	2093-10-08 11:58	> 1 w	0.1315936	0.0112476	0.4166448
EARTH	2103-04-03 07:02	> 1 w	0.0828384	0.0514849	0.6582309
EARTH	2104-10-06 13:05	> 1 w	0.0490711	0.0131126	0.8168813
EARTH	2114-04-01 17:40	> 1 w	0.1368630	0.0490934	0.5311713
EARTH	2115-10-05 11:45	> 1 w	0.0173555	0.0131750	0.2991225
EARTH	2126-09-30 23:35	> 1 w	0.1627405	0.0135197	0.6050270

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
73.35568482	268.63021398	0.01527230	MINIMUM
275.44804548	89.16772497	0.05308798	MINIMUM
354.56704817	178.20378049	0.51157722	SADDLE
174.01926039	359.87463420	0.63454606	SADDLE
357.00785956	1.62638603	1.80380127	SADDLE
190.44792287	195.53656373	2.18667631	MAXIMUM

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MOID Plots

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