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2064 Thomsen (1942 RQ)
Classification: Mars-crossing Asteroid          SPK-ID: 2002064
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3297883756908409 2.3145e-08  
a 2.178951018169098 3.7541e-09 au
q 1.460358301177207 5.0605e-08 au
i 5.695748283075836 1.5512e-06 deg
node 302.1411412900497 8.5507e-06 deg
peri 2.744754729707893 9.6084e-06 deg
M 150.1686677915453 1.9408e-06 deg
tp 2458710.443159738579
(2019-Aug-14.94315974)
5.6025e-06 TDB
period 1174.815393175142
3.22
3.0361e-06
8.312e-09
d
yr
n .3064311227886091 7.9192e-10 deg/d
Q 2.897543735160989 4.9921e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3453  
   data-arc span      28677 days (78.51 yr)  
   first obs. used      1942-09-08  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38004  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:18:04  

Additional Information
 Earth MOID = .443259 au 
 Jupiter MOID = 2.36911 au 
 T_jup = 3.604 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.67   n/a E2021B10  
diameter diameter 13.61 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 4.233 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z. (1991) Icarus 90, 117-122.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2015) Minor Planet Bull. 42, 167-172.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 116-120.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.0549   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
B-V BV 0.887   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.61 deg.
U-B UB 0.524   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.61 deg.
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2064 Thomsen (1942 RQ)          Discovered 1942-Sep-08 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1942 RQ = 1958 RO = 1974 OK = 1977 FE3 = 1977 KA = A913 QB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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