Asteroids

2003SR84 help

Last update: 2024-04-19 23:53 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.893

Aphelion (Q)

2.521

Eccentricity (e)

0.477

Inclination (i)

7.5

deg

Orbit period (P)

814.5

Earth MOID

0.00319

U parameter

5.5

Next Earth close approach

Date

2032-09-19

Nominal distance (from Earth center)

0.07904

11824473

Maximum Brightness

22.9

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

2.240

Discovery Information

Discovery Date

2003-09-20

Observatory

Palomar Mountain/NEAT

Orbit Visualiser

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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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.706849

1-sigma variation

0.000031

Unit

Eccentricity (e)

Value

0.476751

1-sigma variation

0.000010

Unit

Inclination (i)

Value

7.5275

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

183.2675

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

229.9004

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

54.66205

1-sigma variation

0.07328

Unit

Perihelion distance

Value

0.893106

1-sigma variation

Unit

Aphelion distance

Value

2.520591

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.906630

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.007098

1-sigma variation

Unit

MOID

Value

0.003191

1-sigma variation

Unit

Orbit Period

Value

814.4997

1-sigma variation

Unit

U parameter

Value

5.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.79596E-10	3.09158E-10	3.31634E-9	1.87871E-8	-4.54386E-9	-2.29351E-6
e	3.09158E-10	9.76169E-11	1.04823E-9	5.92905E-9	-1.41746E-9	-7.23833E-7
i	3.31634E-9	1.04823E-9	1.14896E-8	6.35738E-8	-1.47860E-8	-7.76472E-6
Ω	1.87871E-8	5.92905E-9	6.35738E-8	3.60320E-7	-8.71996E-8	-4.39859E-5
ω	-4.54386E-9	-1.41746E-9	-1.47860E-8	-8.71996E-8	2.69318E-8	1.06363E-5
M	-2.29351E-6	-7.23833E-7	-7.76472E-6	-4.39859E-5	1.06363E-5	5.36975E-3

Date of computation: 2024-02-21 14:29 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

2.240

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

1.88

Unit

mag

Source

[1]

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

25.782

25.44

Unit

mag

Source

[2]

[3]

Slope Parameter (G)

Value

0.15**

0.24

Unit

mag

Source

[2]

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

19 - 40*

Unit

Source

[4]

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

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Hergenrother, C.W. & R.J. Whiteley (2011) Icarus 214, 194-209. (A survey of small fast rotating asteroids among the near-Earth asteroid population) (new data for 53 NEAs) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 3.) Hergenrother, C.W. & R.J. Whiteley (2005) B.A.A.S. 37, 636-637. (The Rotation State of Small Rapidly Rotating Asteroids)
[2]	ESA ODIM	ESA orbit determination and impact monitoring system
[3]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[4]	Estimation	Estimated from absolute magnitude
[5]	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

Unit

Source

[1]

Unobserved

Value

7511

Unit

Source

[1]

Normalized RMS of residuals

Value

0.393476

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-09-20.19565

Unit

Source

[2]

Last Observation

Value

2003-09-27.27313

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

285 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2003-09-27

Unit

Source

[3]

Last Observation

Value

2003-09-27

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (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 ODIM	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:

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Time step:*

* - these fields are required

Close approaches for 2003SR84 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1952-01-11 05:11	321.1	0.1899160	0.1823319	0.0025781
EARTH	1994-09-15 15:04	129.7	0.1222814	0.1185152	0.0012554
EARTH	2003-09-27 04:39	< 1 s	0.0070864	0.0070860	0.0000001
EARTH	2024-01-02 18:36	436.8	0.1320520	0.1305497	0.0005770
EARTH	2032-09-19 05:34	507.1	0.0790417	0.0665322	0.0041699
EARTH	2052-11-18 04:00	285.2	0.1373568	0.1371213	0.0000791
EARTH	2081-09-30 07:43	1290.6	0.0167666	0.0044599	0.0057773
EARTH	2119-11-28 09:29	> 1 mo	0.1396395	0.1393931	0.0064258

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