Asteroids

194126 2001SG276 help

Last update: 2025-05-21 08:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Amor

Perihelion (q)

1.078

Aphelion (Q)

1.788

Eccentricity (e)

0.248

Inclination (i)

26.7

deg

Orbit period (P)

626.4

Earth MOID

0.08378

U parameter

0.0

Next Earth close approach

Date

2030-04-28

Nominal distance (from Earth center)

0.08718

13042536

Maximum Brightness

13.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

17.9

mag

Diameter

700 - 1600*

Taxonomic type

Rotation period (T)

5.090

Discovery Information

Discovery Date

2001-09-26

Observatory

Lowell Observatory-LONEOS

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.432748

1-sigma variation

8.888E-10

Unit

Eccentricity (e)

Value

0.247849

1-sigma variation

1.477E-8

Unit

Inclination (i)

Value

26.6757

1-sigma variation

5.115E-6

Unit

Long. of Ascending Node (Ω)

Value

35.0978

1-sigma variation

2.887E-6

Unit

Arg. of Perihelion (ω)

Value

200.4419

1-sigma variation

6.830E-6

Unit

Mean Anomaly (M)

Value

23.10371

1-sigma variation

4.408E-6

Unit

Perihelion distance

Value

1.077644

1-sigma variation

Unit

Aphelion distance

Value

1.787853

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.758094

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.085206

1-sigma variation

Unit

MOID

Value

0.083782

1-sigma variation

Unit

Orbit Period

Value

626.4021

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.89904E-19	1.61382E-18	3.33978E-16	-4.61994E-16	1.07489E-15	-2.19341E-15
e	1.61382E-18	2.18274E-16	1.29996E-14	2.50264E-14	1.80939E-14	-2.13720E-14
i	3.33978E-16	1.29996E-14	2.61637E-11	-7.18462E-12	6.54606E-12	-1.04289E-13
Ω	-4.61994E-16	2.50264E-14	-7.18462E-12	8.33357E-12	-9.56269E-12	2.91107E-12
ω	1.07489E-15	1.80939E-14	6.54606E-12	-9.56269E-12	4.66546E-11	-2.55654E-11
M	-2.19341E-15	-2.13720E-14	-1.04289E-13	2.91107E-12	-2.55654E-11	1.94335E-11

Date of computation: 2025-05-21 08:47 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

5.090

Unit

Source

[4]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.22

Unit

mag

Source

[4]

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

17.872

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[6]

Diameter

Value

700 - 1600*

Unit

Source

[6]

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

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	1.) Ieva, S. et al. (2018) Astron. Astrophys. 615, A127. (Photometric survey of 67 near-Earth objects)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Warner, B.D. (2018) MPB 45, 248-256. (Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2018 January-April)(28 NEOs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	Estimation	Estimated from absolute magnitude
[7]	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

8590

Unit

Source

[1]

Unobserved

Value

100

Unit

Source

[1]

Normalized RMS of residuals

Value

0.537908

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-09-26.38041

Unit

Source

[2]

Last Observation

Value

2025-04-03.39674

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1028 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2006-04-13

Unit

Source

[3]

Last Observation

Value

2006-04-14

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

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 194126 2001SG276 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	1982-04-22 18:29	< 1 s	0.1723336	0.1723331	0.0000002
EARTH	1994-04-24 21:45	< 1 s	0.1160351	0.1160348	0.0000001
EARTH	2006-04-26 08:27	< 1 s	0.0900083	0.0900082	0.0000000
EARTH	2018-04-27 06:14	< 1 s	0.0838028	0.0838027	0.0000000
EARTH	2030-04-28 02:07	< 1 s	0.0871840	0.0871839	0.0000000
EARTH	2042-04-29 04:54	< 1 s	0.1045319	0.1045315	0.0000001
EARTH	2054-04-30 21:39	< 1 s	0.1476048	0.1476039	0.0000003

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
345.46180657	113.66551468	0.08378167	MINIMUM
211.56253926	335.07611966	0.86076015	SADDLE
12.78263869	326.19581700	2.05356944	SADDLE
176.63593610	129.31427894	2.79129981	MAXIMUM

Download:

MOID Plots

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