Asteroids

388945 2008TZ3 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.969

Aphelion (Q)

2.216

Eccentricity (e)

0.392

Inclination (i)

8.7

deg

Orbit period (P)

734.0

Earth MOID

0.01599

U parameter

0.0

Next Earth close approach

Date

2026-06-12

Nominal distance (from Earth center)

0.11226

16794455

Maximum Brightness

19.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.4

mag

Diameter

220 - 500*

Taxonomic type

Rotation period (T)

44.20

Discovery Information

Discovery Date

2008-10-06

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

1.592488

1-sigma variation

5.932E-10

Unit

Eccentricity (e)

Value

0.391677

1-sigma variation

5.826E-9

Unit

Inclination (i)

Value

8.6866

1-sigma variation

1.675E-6

Unit

Long. of Ascending Node (Ω)

Value

43.9127

1-sigma variation

2.678E-6

Unit

Arg. of Perihelion (ω)

Value

219.7877

1-sigma variation

3.459E-6

Unit

Mean Anomaly (M)

Value

257.93910

1-sigma variation

1.070E-6

Unit

Perihelion distance

Value

0.968748

1-sigma variation

Unit

Aphelion distance

Value

2.216228

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.937136

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.026386

1-sigma variation

Unit

MOID

Value

0.015989

1-sigma variation

Unit

Orbit Period

Value

734.0281

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.51937E-19	8.88347E-19	-2.22783E-16	1.16749E-15	-1.04411E-15	-3.29561E-16
e	8.88347E-19	3.39391E-17	1.71508E-15	-7.74968E-16	1.23598E-14	-5.80482E-15
i	-2.22783E-16	1.71508E-15	2.80624E-12	-1.38074E-12	1.51453E-12	-1.39842E-13
Ω	1.16749E-15	-7.74968E-16	-1.38074E-12	7.17380E-12	-7.34103E-12	-1.51508E-13
ω	-1.04411E-15	1.23598E-14	1.51453E-12	-7.34103E-12	1.19623E-11	-1.68124E-12
M	-3.29561E-16	-5.80482E-15	-1.39842E-13	-1.51508E-13	-1.68124E-12	1.14561E-12

Date of computation: 2025-09-10 00:30 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

44.20

Unit

Source

[3]

Quality

Value

1,T,U

Unit

Source

[3]

Amplitude

Value

0.56

Unit

mag

Source

[3]

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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.391

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

220 - 500*

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Warner, B.D. (2016) MPB 43, 311-319. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 APRIL-JULY)(31 NEAs)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude
[6]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5846

Unit

Source

[1]

Unobserved

Value

383

Unit

Source

[1]

Normalized RMS of residuals

Value

0.419155

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-10-06.33267

Unit

Source

[2]

Last Observation

Value

2024-10-08.24736

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

2307 (10)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2018-05-03

Unit

Source

[3]

Last Observation

Value

2024-05-28

Unit

Source

[3]

Delay (Discarded)

Value

3 (1)

Unit

Source

[1]

Doppler (Discarded)

Value

4 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

7 (1)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 388945 2008TZ3 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au
EARTH	2012-04-23 07:33	< 1 s	0.1673393	0.1673392
EARTH	2014-04-29 23:29	< 1 s	0.0893598	0.0893597
EARTH	2016-05-05 10:38	< 1 s	0.0337281	0.0337280
EARTH	2018-05-09 10:04	< 1 s	0.0166398	0.0166398
EARTH	2020-05-10 14:16	< 1 s	0.0186721	0.0186720
EARTH	2022-05-15 21:17	< 1 s	0.0383806	0.0383805
EARTH	2024-05-25 14:32	< 1 s	0.0749137	0.0749136
EARTH	2026-06-12 22:10	< 1 s	0.1122640	0.1122639
EARTH	2028-07-02 22:59	< 1 s	0.1361896	0.1361895
EARTH	2030-07-22 15:30	< 1 s	0.1566340	0.1566339
EARTH	2032-08-02 20:06	< 1 s	0.1927393	0.1927392

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
336.55199511	125.76761926	0.01684214	MINIMUM
181.51007155	342.22841096	1.24040386	SADDLE
1.42907086	342.98252988	1.95068312	SADDLE
179.84674008	161.14281247	3.22859136	MAXIMUM

Download:

MOID Plots

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