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JPL Small-Body Database Browser
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1031 Arctica (A924 LC)
Classification: Main-belt Asteroid          SPK-ID: 2001031
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05676500693894893 3.7554e-08  
a 3.0514389173404 1.4081e-08 au
q 2.878223966023793 1.1429e-07 au
i 17.61616175595688 4.5329e-06 deg
node 218.8742516091671 1.3375e-05 deg
peri 309.0818236269681 4.2641e-05 deg
M 103.036781264445 3.9137e-05 deg
tp 2458443.256218439706
(2018-Nov-20.75621844)
0.00021251 TDB
period 1946.952912347328
5.33
1.3477e-05
3.69e-08
d
yr
n .1849043177762162 1.2799e-09 deg/d
Q 3.224653868657006 1.488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2399  
   data-arc span      34772 days (95.20 yr)  
   first obs. used      1924-06-06  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46631  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:14:17  

Additional Information
 Earth MOID = 1.90576 au 
 Jupiter MOID = 1.81011 au 
 T_jup = 3.163 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455770.5 (2011-Jul-28.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05734890341313929 3.7371e-08  
q 2.879696046542783 1.1324e-07 au
tp 2456469.599002966497
(2013-Jun-26.09900297)
0.00021402 TDB
node 218.9590486616774 1.3348e-05 deg
peri 303.1681144294755 4.2291e-05 deg
i 17.62966543988944 4.536e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2399  
   data-arc span      34772 days (95.20 yr)  
   first obs. used      1924-06-06  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46631  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:14:17  

Additional Information
 Jupiter MOID = 1.81011 au 
 T_jup = 3.163 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.396625448812409E-15 -4.203172675664934E-15 6.434421192802038E-13 -7.490026421487425E-17 1.344043867142044E-13 6.218417434816173E-16
q -4.203172675664934E-15 1.282352113485817E-14 -2.37651789730638E-12 -4.152789156388744E-15 -4.952311630996138E-13 -3.370940696227703E-15
tp 6.434421192802038E-13 -2.37651789730638E-12 4.580247076728178E-8 -3.020551933677631E-11 8.604730710786902E-9 1.19489027701605E-11
node -7.490026421487425E-17 -4.152789156388744E-15 -3.020551933677631E-11 1.781739532491893E-10 -1.755616275614531E-10 1.215701884625205E-12
peri 1.344043867142044E-13 -4.952311630996138E-13 8.604730710786902E-9 -1.755616275614531E-10 1.788553980526138E-9 1.027532684055475E-12
i 6.218417434816173E-16 -3.370940696227703E-15 1.19489027701605E-11 1.215701884625205E-12 1.027532684055475E-12 2.05754227506018E-11

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 9.5   n/a MPO473776 IRAS observations used: 21
diameter diameter 75.400 km 0.497 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 24.904 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Polakis, T. (2018) Minor Planet Bull. 45, 269-273.]
geometric albedo albedo 0.035   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.680   0.007 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.84, mean=7.85, max.=7.86) deg.
U-B UB 0.325   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.84, mean=7.85, max.=7.86) deg.
Tholen spectral type spec_T CX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1031 Arctica (A924 LC)          Discovered 1924-Jun-06 by Belyavskij, S. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A924 LC = A910 VB = A913 JA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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