Asteroids

333707 2008YT30 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.920

Aphelion (Q)

1.620

Eccentricity (e)

0.275

Inclination (i)

16.1

deg

Orbit period (P)

522.6

Earth MOID

0.07300

U parameter

0.0

Next Earth close approach

Date

2032-07-17

Nominal distance (from Earth center)

0.18227

27267492

Maximum Brightness

19.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

300 - 800*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-12-31

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

1.269806

1-sigma variation

1.286E-9

Unit

Eccentricity (e)

Value

0.275494

1-sigma variation

1.824E-8

Unit

Inclination (i)

Value

16.1393

1-sigma variation

8.741E-6

Unit

Long. of Ascending Node (Ω)

Value

269.5410

1-sigma variation

1.517E-5

Unit

Arg. of Perihelion (ω)

Value

334.1757

1-sigma variation

1.515E-5

Unit

Mean Anomaly (M)

Value

150.21998

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.919982

1-sigma variation

Unit

Aphelion distance

Value

1.619630

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.077505

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.576433

1-sigma variation

Unit

MOID

Value

0.073004

1-sigma variation

Unit

Orbit Period

Value

522.6425

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.65410E-18	1.24338E-17	1.54865E-15	-3.80723E-15	3.22431E-15	-3.62680E-15
e	1.24338E-17	3.32578E-16	5.24471E-14	8.33475E-14	-1.54052E-13	2.01740E-14
i	1.54865E-15	5.24471E-14	7.64121E-11	3.50243E-11	-3.88977E-11	-1.15839E-12
Ω	-3.80723E-15	8.33475E-14	3.50243E-11	2.30270E-10	-2.07125E-10	-7.53166E-12
ω	3.22431E-15	-1.54052E-13	-3.88977E-11	-2.07125E-10	2.29519E-10	-1.83925E-11
M	-3.62680E-15	2.01740E-14	-1.15839E-12	-7.53166E-12	-1.83925E-11	2.64576E-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

19.415

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

300 - 800*

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

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	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

7639

Unit

Source

[1]

Unobserved

Value

1038

Unit

Source

[1]

Normalized RMS of residuals

Value

0.50124

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-12-24.52243

Unit

Source

[2]

Last Observation

Value

2022-11-23.281332

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

323 (1)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2012-06-23

Unit

Source

[3]

Last Observation

Value

2012-06-23

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 333707 2008YT30 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	1992-06-01 05:07	< 1 min	0.1476523	0.1476515	0.0000003
EARTH	2002-06-16 01:19	< 1 min	0.0941313	0.0941309	0.0000001
EARTH	2012-06-26 04:26	< 1 min	0.0714877	0.0714877	0.0000000
EARTH	2022-07-07 08:50	< 1 s	0.1021713	0.1021711	0.0000001
EARTH	2032-07-17 19:01	< 1 min	0.1822719	0.1822715	0.0000001
EARTH	2075-05-27 06:55	< 1 min	0.1685093	0.1685087	0.0000002
EARTH	2085-06-12 23:35	< 1 min	0.1043170	0.1043166	0.0000001
EARTH	2095-06-25 14:04	< 1 min	0.0726947	0.0726946	0.0000000
EARTH	2105-07-05 20:24	< 1 min	0.0907261	0.0907253	0.0000003
EARTH	2115-07-17 16:17	< 1 min	0.1647732	0.1647718	0.0000005

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
23.86890995	172.48103802	0.07124874	MINIMUM
170.16331643	315.52962506	0.65550233	SADDLE
358.88719548	320.30141112	1.90345081	SADDLE
183.31525256	145.15826426	2.62878876	MAXIMUM

Download:

MOID Plots

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