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1087 Arabis (1927 RD)
Classification: Main-belt Asteroid          SPK-ID: 2001087
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09304190776739434 4.3464e-08  
a 3.015302098263612 1.3554e-08 au
q 2.734752638546138 1.2896e-07 au
i 10.05526105443428 4.8262e-06 deg
node 30.40616465825205 2.3395e-05 deg
peri 25.50635399126222 3.4796e-05 deg
M 201.7149796318294 2.5216e-05 deg
tp 2459841.376058590335
(2022-Sep-18.87605859)
0.00013561 TDB
period 1912.470178090164
5.24
1.2895e-05
3.53e-08
d
yr
n .1882382293456226 1.2692e-09 deg/d
Q 3.295851557981085 1.4815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      33754 days (92.41 yr)  
   first obs. used      1927-09-02  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:45:12  

Additional Information
 Earth MOID = 1.74928 au 
 Jupiter MOID = 2.10891 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455891.5 (2011-Nov-26.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09643462898329738 4.2866e-08  
q 2.725676773894813 1.2778e-07 au
tp 2456026.782665423182
(2012-Apr-09.28266542)
0.00012716 TDB
node 30.48846972360284 2.333e-05 deg
peri 26.96735345054065 3.4234e-05 deg
i 10.07188293309017 4.833e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      33754 days (92.41 yr)  
   first obs. used      1927-09-02  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:45:12  

Additional Information
 Jupiter MOID = 2.10891 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.837481677976902E-15 -5.451929130587078E-15 -1.332925312532869E-12 4.772723018359286E-15 -3.255898931761914E-13 -1.984827492943756E-15
q -5.451929130587078E-15 1.632830367634834E-14 4.081961170409679E-12 -1.291522041900386E-14 9.849493316030932E-13 5.769392123245485E-15
tp -1.332925312532869E-12 4.081961170409679E-12 1.616877679272871E-8 6.331758114971725E-12 3.197689036968475E-9 -3.953061185333337E-12
node 4.772723018359286E-15 -1.291522041900386E-14 6.331758114971725E-12 5.442882144893759E-10 -5.345180448106327E-10 -1.563189120035011E-11
peri -3.255898931761914E-13 9.849493316030932E-13 3.197689036968475E-9 -5.345180448106327E-10 1.171950295425682E-9 1.469564770048533E-11
i -1.984827492943756E-15 5.769392123245485E-15 -3.953061185333337E-12 -1.563189120035011E-11 1.469564770048533E-11 2.335817017907785E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.8   n/a MPO473777 IRAS observations used: 3
diameter diameter 37.498 km 0.493 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.794 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Barucci, M.A.; Di Martino, M.; Dotto, E.; Fulchignoni, M.; et al. (1994) Icarus 109, 267-273.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.]
geometric albedo albedo 0.098   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.823   0.004 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.06, mean=4.31, max.=6.82) deg.
U-B UB 0.370   0.067 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.06, mean=5.33, max.=6.99) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1087 Arabis (1927 RD)          Discovered 1927-Sep-02 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1927 RD = 1973 LB = A917 UE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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