Asteroids

360191 1988TA help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.803

Aphelion (Q)

2.278

Eccentricity (e)

0.479

Inclination (i)

2.5

deg

Orbit period (P)

698.3

Earth MOID

0.00571

U parameter

0.0

Next Earth close approach

Date

2032-09-18

Nominal distance (from Earth center)

0.09693

14500735

Maximum Brightness

20.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.9

mag

Diameter

400

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1988-10-05

Observatory

Palomar Mountain

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

1.540436

1-sigma variation

1.554E-9

Unit

Eccentricity (e)

Value

0.478668

1-sigma variation

1.910E-8

Unit

Inclination (i)

Value

2.5321

1-sigma variation

5.804E-6

Unit

Long. of Ascending Node (Ω)

Value

194.6049

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

105.3402

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

175.55666

1-sigma variation

3.934E-6

Unit

Perihelion distance

Value

0.803078

1-sigma variation

Unit

Aphelion distance

Value

2.277793

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.357756

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.054672

1-sigma variation

Unit

MOID

Value

0.005712

1-sigma variation

Unit

Orbit Period

Value

698.3350

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.41585E-18	1.35792E-18	1.81012E-15	6.75043E-15	-7.65783E-15	-5.94592E-15
e	1.35792E-18	3.64983E-16	5.13272E-16	-2.27526E-13	2.95813E-13	-1.08501E-14
i	1.81012E-15	5.13272E-16	3.36858E-11	4.77273E-10	-4.75745E-10	-9.08964E-12
Ω	6.75043E-15	-2.27526E-13	4.77273E-10	7.38478E-9	-7.37900E-9	-8.21758E-11
ω	-7.65783E-15	2.95813E-13	-4.75745E-10	-7.37900E-9	7.38776E-9	8.25149E-11
M	-5.94592E-15	-1.08501E-14	-9.08964E-12	-8.21758E-11	8.25149E-11	1.54783E-11

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

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

20.897

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.29

Unit

Source

[3]

Diameter

Value

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

Radar R

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	EARN	1.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)
[3]	EARN	1.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)
[4]	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

8984

Unit

Source

[1]

Unobserved

Value

4545

Unit

Source

[1]

Normalized RMS of residuals

Value

0.368528

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1988-10-05.30557

Unit

Source

[2]

Last Observation

Value

2013-05-09.06245

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

299 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-05-08

Unit

Source

[3]

Last Observation

Value

2013-05-11

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

4 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

9 (0)

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 360191 1988TA from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1963-10-08 10:42	< 1 min	0.1184992	0.1184819	0.0000057
EARTH	1967-05-07 06:17	< 1 min	0.0719349	0.0719168	0.0000060
EARTH	1988-09-29 02:11	< 1 min	0.0098349	0.0098344	0.0000001
EARTH	1990-06-19 23:03	< 1 min	0.1851623	0.1851620	0.0000001
EARTH	2011-08-16 15:46	< 1 min	0.1938691	0.1938689	0.0000000
EARTH	2013-05-10 01:28	< 1 s	0.0335699	0.0335699	0.0000000
EARTH	2032-09-18 16:12	< 1 min	0.0969314	0.0969308	0.0000002
EARTH	2034-05-27 04:42	< 1 min	0.1162202	0.1162197	0.0000002
EARTH	2053-09-30 20:30	< 1 min	0.0057022	0.0057019	0.0000001
EARTH	2055-06-29 15:28	1.6	0.1990537	0.1990510	0.0000009
EARTH	2076-10-09 13:07	3.0	0.1296880	0.1295738	0.0000381
EARTH	2080-05-05 16:17	3.7	0.1007371	0.1006166	0.0000402
EARTH	2101-08-20 22:28	8.9	0.1890684	0.1890466	0.0000073
EARTH	2103-05-16 08:58	2.1	0.0360153	0.0359883	0.0000090
EARTH	2124-09-30 19:43	2.4	0.0151659	0.0151138	0.0000174

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
43.07514772	265.83653659	0.00581932	MINIMUM
315.76146973	128.14452396	0.02659467	MINIMUM
359.14648816	196.59281728	0.21593354	SADDLE
179.73898471	17.41655489	1.29454618	SADDLE
359.35914236	16.94755878	1.78707868	SADDLE
179.78628686	197.44066112	3.29226497	MAXIMUM

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MOID Plots

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