Asteroids

2012TV help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.644

Aphelion (Q)

2.363

Eccentricity (e)

0.572

Inclination (i)

5.5

deg

Orbit period (P)

673.3

Earth MOID

0.00171

U parameter

6.8

Next Earth close approach

Date

2046-03-22

Nominal distance (from Earth center)

0.14247

21313808

Maximum Brightness

24.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

0.05250

Discovery Information

Discovery Date

2012-10-05

Observatory

Tenagra II Observatory, Nogales

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

1.503465

1-sigma variation

0.000093

Unit

Eccentricity (e)

Value

0.571876

1-sigma variation

0.000080

Unit

Inclination (i)

Value

5.5426

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

193.4004

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

270.0736

1-sigma variation

0.0196

Unit

Mean Anomaly (M)

Value

16.38772

1-sigma variation

0.61541

Unit

Perihelion distance

Value

0.643669

1-sigma variation

Unit

Aphelion distance

Value

2.363261

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.009959

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.012470

1-sigma variation

Unit

MOID

Value

0.001708

1-sigma variation

Unit

Orbit Period

Value

673.3464

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.62506E-9	-7.46341E-9	-1.75965E-7	-7.78877E-8	1.82185E-6	5.71541E-5
e	-7.46341E-9	6.45835E-9	1.52266E-7	6.73978E-8	-1.57646E-6	-4.94565E-5
i	-1.75965E-7	1.52266E-7	3.59045E-6	1.58903E-6	-3.71687E-5	-1.16604E-3
Ω	-7.78877E-8	6.73978E-8	1.58903E-6	7.03365E-7	-1.64520E-5	-5.16124E-4
ω	1.82185E-6	-1.57646E-6	-3.71687E-5	-1.64520E-5	3.84827E-4	1.20725E-2
M	5.71541E-5	-4.94565E-5	-1.16604E-3	-5.16124E-4	1.20725E-2	3.78733E-1

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

0.05250

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.57

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

25.105

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

25 - 60*

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

[-]

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Sources

No.	Name	Additional
[1]	EARN	1.) Franco, L. et al. (2013) MPB 40, 44-45. (LIGHTCURVE PHOTOMETRY OF NEA 2012 TV)
[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

Unit

Source

[1]

Unobserved

Value

4744

Unit

Source

[1]

Normalized RMS of residuals

Value

0.279169

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-09-26.385258

Unit

Source

[2]

Last Observation

Value

2012-10-07.139774

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

205 (1)

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 2012TV 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	1951-10-11 01:13	> 1 w	0.0484565	0.0003318	0.1177108
EARTH	1974-03-31 03:57	1014.7	0.0210669	0.0045998	0.0112178
EARTH	1988-09-28 08:59	> 1 d	0.1650957	0.0779509	0.0290485
EARTH	1998-04-05 11:43	> 1 d	0.0687974	0.0036025	0.0342836
EARTH	2012-10-07 15:04	< 1 s	0.0017042	0.0017029	0.0000005
EARTH	2022-04-05 06:24	> 1 d	0.0510812	0.0018084	0.0216942
EARTH	2046-03-22 14:33	608.3	0.1424740	0.1298316	0.0042142
EARTH	2047-10-18 03:55	342.3	0.1290279	0.1195989	0.0031431
EARTH	2071-10-11 04:12	> 1 d	0.0357872	0.0032637	0.0181545
EARTH	2094-03-28 23:58	> 1 d	0.0718590	0.0002147	0.0582839
EARTH	2108-09-29 23:20	> 1 d	0.1755151	0.0313961	0.0480598
EARTH	2118-04-07 08:18	> 1 d	0.0597151	0.0007073	0.0321379

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
54.15897532	89.12612366	0.00190179	MINIMUM
305.89561753	273.41113438	0.00224473	MINIMUM
0.04146123	1.28381860	0.34851352	SADDLE
180.01178081	181.25121079	1.35521971	SADDLE
0.04681103	181.29281402	1.65818253	SADDLE
180.01252923	1.25132020	3.34363007	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2012TV

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2070-04-03.093	77204.093	-1.763	0.50 ± 0.004	5.68E5	3.26E-7	2.36E0	-6.33
2070-04-03.125	77204.125	-1.497	1.03 ± 0.004	7.70E5	2.29E-7	2.36E0	-6.48
2075-04-03.171	79030.171	-2.589	0.20 ± 0.009	9.57E5	3.52E-8	2.36E0	-7.34
2081-04-01.971	81220.971	-2.817	1.14 ± 0.004	1.54E6	6.24E-9	2.36E0	-8.14
2081-04-02.711	81221.711	2.773	1.13 ± 0.004	1.02E4	8.56E-7	2.39E0	-6.00
2085-04-02.741	82682.741	-2.007	0.06 ± 0.027	4.14E6	3.09E-8	2.37E0	-7.47
2094-04-02.850	85969.850	-1.373	0.87 ± 0.003	3.96E6	8.88E-8	2.36E0	-7.07
2094-04-02.859	85969.859	3.122	0.59 ± 0.002	3.07E5	2.39E-8	2.39E0	-7.64
2096-04-02.334	86700.334	-1.679	0.08 ± 0.000	8.49E6	2.75E-8	2.37E0	-7.59
2096-04-02.382	86700.382	-1.835	0.49 ± 0.004	3.41E6	4.92E-8	2.36E0	-7.34
2115-04-03.799	93639.799	-1.808	0.54 ± 0.004	1.26E7	1.41E-8	2.36E0	-7.98
2120-04-03.208	95466.208	-1.340	1.19 ± 0.004	3.07E6	8.57E-8	2.37E0	-7.22


Based on 211 optical observations (of which 1 are rejected as outliers) from 2012/09/26.385 to 2012/10/07.140.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.20 and 1.20 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250805 130500.123 UTC.

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