Asteroids

470975 2009SC15 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.038

Aphelion (Q)

1.491

Eccentricity (e)

0.179

Inclination (i)

6.8

deg

Orbit period (P)

519.6

Earth MOID

0.05435

U parameter

0.0

A₂

-115.5

10^-15au/days²

Next Earth close approach

Date

2050-03-14

Nominal distance (from Earth center)

0.07266

10869569

Maximum Brightness

17.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.4

mag

Diameter

140 - 300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2009-09-19

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

1.264889

1-sigma variation

4.413E-9

Unit

Eccentricity (e)

Value

0.179071

1-sigma variation

1.326E-8

Unit

Inclination (i)

Value

6.8414

1-sigma variation

2.260E-6

Unit

Long. of Ascending Node (Ω)

Value

178.5707

1-sigma variation

1.430E-5

Unit

Arg. of Perihelion (ω)

Value

333.9778

1-sigma variation

1.630E-5

Unit

Mean Anomaly (M)

Value

340.89970

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.038383

1-sigma variation

Unit

Aphelion distance

Value

1.491394

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.057872

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.454736

1-sigma variation

Unit

MOID

Value

0.054353

1-sigma variation

Unit

Orbit Period

Value

519.6092

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

-115.46951

1-sigma variation

14.37510

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.94711E-17	-7.95234E-18	6.70419E-16	-4.12054E-16	3.26287E-15	-1.69810E-14	6.26362E-8
e	-7.95234E-18	1.75770E-16	-2.07467E-15	-5.10349E-15	2.46831E-14	-3.12804E-14	-2.60289E-8
i	6.70419E-16	-2.07467E-15	5.10980E-12	5.26080E-12	-8.87889E-12	3.54143E-12	2.04397E-6
Ω	-4.12054E-16	-5.10349E-15	5.26080E-12	2.04526E-10	-2.05523E-10	2.78161E-12	8.24850E-6
ω	3.26287E-15	2.46831E-14	-8.87889E-12	-2.05523E-10	2.65720E-10	-6.46299E-11	-1.11796E-5
M	-1.69810E-14	-3.12804E-14	3.54143E-12	2.78161E-12	-6.46299E-11	8.04809E-11	-4.01420E-5
A₂	6.26362E-8	-2.60289E-8	2.04397E-6	8.24850E-6	-1.11796E-5	-4.01420E-5	2.06645E2

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

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.412

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

140 - 300*

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

Visual S

Unit

Source

[6]

[2]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) Kuroda, D. et al. (2014) PASJ 66, 51. (Visible-wavelength spectroscopy of subkilometer-sized near-Earth asteroids with a low delta-v) (89136,136923,141018,163000,214869, 253062,311925,363305,2009SC15,2009SQ104,2011BT15)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[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

7539

Unit

Source

[1]

Unobserved

Value

857

Unit

Source

[1]

Normalized RMS of residuals

Value

0.50638

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-10-31.327124

Unit

Source

[2]

Last Observation

Value

2023-06-22.388157

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

344 (5)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-03-18

Unit

Source

[3]

Last Observation

Value

2013-03-18

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 470975 2009SC15 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	1976-03-17 03:37	< 1 min	0.1544724	0.1544646	0.0000026
EARTH	1986-03-10 01:05	< 1 min	0.0898356	0.0898309	0.0000016
EARTH	2013-03-13 20:35	< 1 s	0.0814977	0.0814977	0.0000000
MARS	2022-08-21 08:59	< 1 s	0.0293879	0.0293877	0.0000001
EARTH	2023-03-09 00:51	< 1 min	0.1609941	0.1609939	0.0000001
EARTH	2050-03-14 00:39	< 1 min	0.0726586	0.0726546	0.0000013
EARTH	2060-03-08 15:14	< 1 min	0.1382540	0.1382442	0.0000033
MARS	2075-04-21 13:59	< 1 min	0.0389017	0.0388935	0.0000027
EARTH	2087-03-18 21:41	< 1 min	0.1566883	0.1566761	0.0000041
EARTH	2097-03-10 12:50	< 1 min	0.0752606	0.0752538	0.0000023
EARTH	2124-03-16 23:03	< 1 min	0.1123712	0.1123644	0.0000023

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
15.49485517	68.08489010	0.05499690	MINIMUM
178.85781693	230.03365736	0.48536268	SADDLE
3.23776038	233.62410841	2.04766134	SADDLE
183.38930465	53.81342786	2.48044747	MAXIMUM

Download:

MOID Plots

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