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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09304189963126637 4.1113e-08  
a 3.015302095906885 1.3163e-08 au
q 2.734752660941569 1.2274e-07 au
i 10.05525981129542 4.6189e-06 deg
node 30.40616891864498 2.2745e-05 deg
peri 25.50635429322111 3.2912e-05 deg
M 201.7149765764319 2.4109e-05 deg
tp 2459841.376073836052
(2022-Sep-18.87607384)
0.0001302 TDB
period 1912.470175848016
5.24
1.2523e-05
3.429e-08
d
yr
n .1882382295663099 1.2326e-09 deg/d
Q 3.2958515308722 1.4387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2640  
   data-arc span      34006 days (93.10 yr)  
   first obs. used      1927-09-02  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:22:40  

Additional Information
 Earth MOID = 1.74928 au 
 Jupiter MOID = 2.10891 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456078.5 (2012-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09614515740029254 4.0851e-08  
q 2.726013530931018 1.2237e-07 au
tp 2456024.771004000251
(2012-Apr-07.27100400)
0.00011925 TDB
node 30.47678656649485 2.2704e-05 deg
peri 26.5166482550497 3.2381e-05 deg
i 10.06598503685557 4.623e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2640  
   data-arc span      34006 days (93.10 yr)  
   first obs. used      1927-09-02  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:22:40  

Additional Information
 Jupiter MOID = 2.10891 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.668776530677851E-15 -4.974156846337695E-15 -7.075870856767221E-13 2.210929848041284E-15 -1.850286848054617E-13 -1.26404215814767E-15
q -4.974156846337695E-15 1.49743451475001E-14 2.399835589815077E-12 -6.261910233754753E-15 6.037415062746819E-13 3.52068346374023E-15
tp -7.075870856767221E-13 2.399835589815077E-12 1.422143254576537E-8 1.95567778076232E-12 2.766696934578607E-9 -3.470584018762255E-12
node 2.210929848041284E-15 -6.261910233754753E-15 1.95567778076232E-12 5.154895952512032E-10 -5.070342221540219E-10 -8.033958303750362E-12
peri -1.850286848054617E-13 6.037415062746819E-13 2.766696934578607E-9 -5.070342221540219E-10 1.048515212349872E-9 7.289114242942334E-12
i -1.26404215814767E-15 3.52068346374023E-15 -3.470584018762255E-12 -8.033958303750362E-12 7.289114242942334E-12 2.137184834155916E-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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