Asteroids

2012BV1 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.844

Aphelion (Q)

1.621

Eccentricity (e)

0.315

Inclination (i)

0.8

deg

Orbit period (P)

499.8

Earth MOID

0.00070

U parameter

9.0

Next Earth close approach

Date

2027-06-15

Nominal distance (from Earth center)

0.07303

10925335

Maximum Brightness

28.5

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

31.2

mag

Diameter

1.5 - 3*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2012-01-18

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

1.232605

1-sigma variation

0.008103

Unit

Eccentricity (e)

Value

0.314956

1-sigma variation

0.002102

Unit

Inclination (i)

Value

0.7634

1-sigma variation

0.0053

Unit

Long. of Ascending Node (Ω)

Value

296.3050

1-sigma variation

0.0944

Unit

Arg. of Perihelion (ω)

Value

249.2781

1-sigma variation

1.0221

Unit

Mean Anomaly (M)

Value

350.43793

1-sigma variation

4.61370

Unit

Perihelion distance

Value

0.844388

1-sigma variation

Unit

Aphelion distance

Value

1.620821

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.233465

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.013975

1-sigma variation

Unit

MOID

Value

0.000699

1-sigma variation

Unit

Orbit Period

Value

499.8436

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.56550E-5	1.70303E-5	4.29855E-5	7.64810E-4	-8.28145E-3	-3.73837E-2
e	1.70303E-5	4.41826E-6	1.11450E-5	1.98377E-4	-2.14795E-3	-9.69705E-3
i	4.29855E-5	1.11450E-5	2.81779E-5	5.00784E-4	-5.42324E-3	-2.44754E-2
Ω	7.64810E-4	1.98377E-4	5.00784E-4	8.90929E-3	-9.64717E-2	-4.35480E-1
ω	-8.28145E-3	-2.14795E-3	-5.42324E-3	-9.64717E-2	1.04463E0	4.71542E0
M	-3.73837E-2	-9.69705E-3	-2.44754E-2	-4.35480E-1	4.71542E0	2.12862E1

Date of computation: 2025-11-24 16:53 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

31.24

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

1.5 - 3*

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

Unit

Source

[-]

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Sources

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

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

5066

Unit

Source

[1]

Normalized RMS of residuals

Value

0.852853

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-01-18.34775

Unit

Source

[2]

Last Observation

Value

2012-01-19.47008

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2012BV1 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	1955-01-21 21:44	> 1 w	0.0184304	0.0003127	0.1177246
EARTH	1965-01-06 08:41	287.4	0.1894980	0.1650167	0.0081725
EARTH	1972-06-04 02:08	> 1 d	0.0328697	0.0118336	0.0694458
EARTH	1982-05-27 05:26	> 1 w	0.0420513	0.0117320	0.0888606
EARTH	1992-04-10 10:24	> 1 mo	0.1380144	0.0934724	0.0149534
EARTH	2002-02-25 08:05	> 1 w	0.1210011	0.0692767	0.0172712
MARS	2005-06-01 14:07	334.6	0.0481697	0.0478684	0.0025252
EARTH	2012-01-20 07:13	< 1 min	0.0021303	0.0021233	0.0000023
EARTH	2023-01-18 12:41	> 1 d	0.0194535	0.0006860	0.0471448
EARTH	2027-06-15 15:44	> 1 w	0.0730314	0.0081409	0.2143754
MARS	2037-10-31 08:03	> 1 w	0.0219296	0.0210415	0.1304970
EARTH	2038-04-28 06:30	> 1 mo	0.1358229	0.0087023	0.2417150
EARTH	2049-02-11 03:21	> 1 mo	0.1009348	0.0020607	0.8320570
EARTH	2060-01-11 15:06	> 1 mo	0.1331470	0.0007299	1.1770249
EARTH	2064-06-07 23:17	> 1 mo	0.0146946	0.0081025	0.7732593
EARTH	2075-01-26 05:06	> 1 mo	0.0482227	0.0015490	6.7031053
EARTH	2079-06-17 19:35	> 1 mo	0.1058855	0.0078416	4.7939884
MARS	2082-12-18 23:17	> 1 mo	0.0476607	0.0237067	1.0556984
EARTH	2090-04-07 08:05	> 1 mo	0.1532079	0.0499955	0.3295768
MARS	2098-01-04 23:04	> 1 mo	0.0449221	0.0208852	5.8584236
EARTH	2101-01-17 05:16	> 1 mo	0.0441171	0.0017410	10.8950564
EARTH	2105-06-10 02:11	> 1 mo	0.0100575	0.0075445	0.1901582
EARTH	2116-01-09 03:21	> 1 mo	0.1801643	0.0012064	22.9481791
EARTH	2120-04-09 00:24	> 1 mo	0.1544045	0.0142621	3.1032244

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
309.72175717	17.02136703	0.00066418	MINIMUM
55.95554112	155.68964001	0.00840662	MINIMUM
3.38919264	86.94912074	0.15464732	SADDLE
181.75174006	265.19974924	0.61951056	SADDLE
3.34226692	266.88224088	1.84544818	SADDLE
181.72791190	85.18095233	2.61894135	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2012BV1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2083-01-18.576	81877.576	0.410	0.000	1.51 ± 0.029	6.07E7	8.38E-9	3.19E-4	-11.12	0


Based on 21 optical observations (of which 2 are rejected as outliers) from 2012/01/18.348 to 2012/01/19.470.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.66 and 1.66 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: