Asteroids

523664 2012OD1 help

Last update: 2025-03-28 15:40 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.412

Aphelion (Q)

1.246

Eccentricity (e)

0.503

Inclination (i)

42.3

deg

Orbit period (P)

275.6

Earth MOID

0.03777

U parameter

0.0

Next Earth close approach

Date

2027-07-31

Nominal distance (from Earth center)

0.10261

15350144

Maximum Brightness

18.3

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

18.5

mag

Diameter

500 - 1200*

Taxonomic type

Rotation period (T)

12.63

Discovery Information

Discovery Date

2012-07-19

Observatory

OAM Observatory, La Sagra

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

0.828775

1-sigma variation

1.686E-9

Unit

Eccentricity (e)

Value

0.502882

1-sigma variation

6.759E-8

Unit

Inclination (i)

Value

42.2611

1-sigma variation

4.908E-6

Unit

Long. of Ascending Node (Ω)

Value

303.7247

1-sigma variation

8.910E-7

Unit

Arg. of Perihelion (ω)

Value

224.3603

1-sigma variation

1.204E-6

Unit

Mean Anomaly (M)

Value

92.39166

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.411999

1-sigma variation

Unit

Aphelion distance

Value

1.245551

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.048294

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.529315

1-sigma variation

Unit

MOID

Value

0.037771

1-sigma variation

Unit

Orbit Period

Value

275.5835

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.84158E-18	2.58996E-17	-3.28304E-16	-3.26219E-16	-7.34296E-17	-5.66977E-15
e	2.58996E-17	4.56893E-15	-9.64144E-14	-1.43079E-14	-7.71745E-14	-4.85238E-13
i	-3.28304E-16	-9.64144E-14	2.40912E-11	3.55041E-12	2.97528E-13	1.04947E-11
Ω	-3.26219E-16	-1.43079E-14	3.55041E-12	7.93897E-13	-2.11566E-14	2.34676E-12
ω	-7.34296E-17	-7.71745E-14	2.97528E-13	-2.11566E-14	1.45056E-12	7.69459E-12
M	-5.66977E-15	-4.85238E-13	1.04947E-11	2.34676E-12	7.69459E-12	5.57531E-11

Date of computation: 2025-03-28 15:40 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

12.63

Unit

Source

[1]

Quality

Value

Unit

Source

[-]

Amplitude

Value

0.63

Unit

mag

Source

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

340

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

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

18.469

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

500 - 1200*

Unit

Source

[3]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2018 July-September, B.D. Warner
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4441

Unit

Source

[1]

Unobserved

Value

241

Unit

Source

[1]

Normalized RMS of residuals

Value

0.439106

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-07-19.1038

Unit

Source

[2]

Last Observation

Value

2024-09-15.165954

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1485 (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

2024-07-26

Unit

Source

[3]

Last Observation

Value

2024-07-31

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

5 (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 523664 2012OD1 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	1978-07-24 19:22	< 1 s	0.1688761	0.1688742	0.0000006
EARTH	1981-07-26 09:15	< 1 min	0.0792756	0.0792740	0.0000006
EARTH	1984-07-28 17:20	< 1 min	0.0449631	0.0449622	0.0000003
EARTH	1987-08-01 18:17	< 1 min	0.1278916	0.1278901	0.0000005
EARTH	2018-07-24 15:09	< 1 s	0.1963625	0.1963623	0.0000001
EARTH	2021-07-25 22:08	< 1 s	0.1040403	0.1040402	0.0000000
EARTH	2024-07-28 02:46	< 1 s	0.0382178	0.0382178	0.0000000
EARTH	2027-07-31 23:30	< 1 s	0.1026094	0.1026092	0.0000001
EARTH	2030-08-04 09:36	< 1 s	0.1980569	0.1980566	0.0000001
EARTH	2061-07-25 12:56	< 1 s	0.1297889	0.1297873	0.0000005
EARTH	2064-07-27 12:37	< 1 min	0.0477504	0.0477493	0.0000004
EARTH	2067-07-31 03:53	< 1 min	0.0766868	0.0766851	0.0000006
EARTH	2070-08-03 09:41	< 1 min	0.1684431	0.1684411	0.0000007
EARTH	2101-07-26 01:43	< 1 min	0.1677845	0.1677818	0.0000009
EARTH	2104-07-27 15:44	< 1 min	0.0785915	0.0785890	0.0000008
EARTH	2107-07-31 00:31	< 1 min	0.0466846	0.0466830	0.0000005
EARTH	2110-08-03 02:12	< 1 min	0.1296389	0.1296360	0.0000009

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
112.06425225	203.35070294	0.03777073	MINIMUM
317.80278559	3.65158556	0.50202306	MINIMUM
230.21827404	272.10115732	0.72897478	SADDLE
24.84325126	103.72214848	0.73513635	SADDLE
17.89591441	268.70999460	1.35772400	SADDLE
169.79370533	52.60566210	2.17778686	MAXIMUM

Download:

MOID Plots

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